Background On November 2, 2015,
CBS announced a new
Star Trek television series to premiere in January 2017, "on the heels" of
Star Trek: The Original Series 50th anniversary in 2016. In February 2016,
Bryan Fuller, who began his career writing for the series
Star Trek: Deep Space Nine and
Star Trek: Voyager, was announced as the new series'
showrunner, and co-creator alongside
Alex Kurtzman. CBS did not have a plan for what the new show would be when Fuller joined, and he proposed an
anthology series with each season being a standalone, serialized show set in a different era, beginning with a prequel to the original series. CBS told Fuller to just start with a single serialized show and see how that performs first, and he began further developing the prequel concept. By the end of 2016, Fuller had left the series due to conflicts with CBS and other commitments. He had hired
Gretchen J. Berg and
Aaron Harberts to act as co-showrunners with him, and they took over after his departure. In June 2017, Kurtzman said that he and Fuller had discussed plans for future seasons before the latter's departure.
Development In August 2017, before the series premiere, executive producer
Akiva Goldsman stated that though the series is not an anthology as Fuller first proposed, "it's kind of a hybridized approach. I don't think we're looking for an endless, continuing nine or 10 year story. We're looking at arcs which will have characters that we know and characters that we don't know." Kurtzman elaborated that the Federation-Klingon War story arc of the first season would not continue in a second. However, he was not interested in a full anthology series because "I wouldn't necessarily want to throw [the characters] away at the end of the season for a new show", and instead felt that the aftereffects of the first season would be felt moving forward: "The results of the war are going to allow for a lot of new storytelling", with "the casualties, the things that have grown in Starfleet as a result of the war" carrying over to the next season. By the end of the month, Berg and Harberts had developed a road map for a second season. After the series premiered, Kurtzman said a "big idea" had been proposed mid-way through production on the first season which became the "spine" of the second, with the writers' "emotional compass" having pointed them to using that idea. He added that the series' producers wanted to avoid announcing release dates for future seasons just to delay them as happened on the first season, but he hoped a second season would be available in early 2019 as long as the quality and scope of the series was not compromised to achieve that. On October 23, a 13-episode second season was officially ordered by
CBS All Access.
CBS Interactive President Marc DeBevoise cited the increased subscriptions for All Access since the series' debut, as well as critical acclaim and fan interest, when announcing the renewal. In June 2018, during production on the season,
CBS Television Studios fired Berg and Harberts. The studio and network were pleased with the scripts and early cuts of already filmed episodes, but the first episode had gone significantly over budget—to the point that the budgets for later episodes would have to be reduced—and the pair were allegedly abusive towards the writing staff, with multiple writers becoming uncomfortable working with them. Some had apparently been threatened by Harberts after stating their intention to file a formal complaint. Kurtzman was made sole showrunner in their place, and was described as the "glue holding
Discovery together". Kurtzman took over the role because he felt Berg and Harberts had been forced to "pick up the pieces" following Fuller's departure and he did not want to make someone else do that again. Despite not planning to showrun
Discovery, Kurtzman felt as co-creator of the series that it was his responsibility to make sure it was working. With the change in showrunner came news that Goldsman had not returned as executive producer for the second season, after serving as Kurtzman's "right-hand man" on the first, because he had a "management style and personality that clashed with the writing staff". At the end of June,
James Duff joined as an executive producer to help Kurtzman run the writers room.
Olatunde Osunsanmi, who served as a director and co-executive producer during the first season, became a full executive producer and was set as producing director for the rest of the season. Additionally,
Jenny Lumet, who joined as a consulting producer at the beginning of the season, was promoted to co-executive producer. In July 2018, the season was confirmed to premiere in January 2019. Star
Anson Mount revealed in December that the season had been extended to 14 episodes to amortize the cost of production delays following the showrunner change.
Writing The series' writers began work on the second season in December 2017, and were considering "science vs. faith" as the main theme. Harberts said the season would be "jam packed" with things that they were not able to do in the first. In March 2018, he clarified that the series would not just be looking at religion, but also "patterns in our lives. It means connections you can't explain. Who enters your life and who leaves your life and these indelible impressions people make ... that is one of our biggest ideas now and it is threading through all of our characters' lives." Something that Kurtzman felt the best
Star Trek series had was examinations of the real world at the time of their creation, and so this season would address "building walls around ourselves, literally, to keep people out" and how that can "chip away at our essential understanding of Starfleet doctrine, and what it means to assume diversity". Mount felt the season was able to "get back to those big questions" because it was no longer questioning the leadership of the
Discovery as was done with Captain Gabriel Lorca in the first season. Kurtzman noted that religion is a controversial topic among
Star Trek fans, and the series' study of faith was "never about picking on religion as much as it was about faith in each other and in themselves". He felt that protagonist
Michael Burnham wrestles with faith because she was not raised with it, but is rewarded for finding it. He interpreted this as saying, "If you believe in yourself, ultimately, the best outcome presents itself." Without the first season's Federation–Klingon War storyline, Kurtzman said there would be less focus on the Klingons in the second season and far fewer Klingon-only scenes, but Klingon characters would still appear. He added that the Klingons would grow their hair back to show that they are no longer at war, something he said was always intended and not a response to fan criticisms of the bald Klingons in the first season. The second season has a single serialized story like the first season had, but the writers moved towards a more episodic feel by having a central character or question for each episode. The second season begins where the first season ended, with the arrival of the
USS Enterprise. This ties into a larger story that is the main arc for the second season, involving seven mysterious signals and a mysterious "red angel" figure. Harberts wanted to explore the character
Christopher Pike, captain of the
Enterprise, feeling that he had not been seen much in the franchise. Burnham's adoptive brother
Spock is also a crew member of the
Enterprise, but Harberts was less interested in exploring him given his many appearances throughout the
Star Trek franchise. Harberts was also reluctant to have an actor other than
Leonard Nimoy or
Zachary Quinto portray the character. However, Spock was confirmed to be included in the season in April 2018, and his relationship with Burnham became the most important part of the season for Kurtzman. The writers wanted to tell a new story with Spock that would show him become closer to the Nimoy and Quinto versions over time, visually signified by having the character shave his beard at the end of the season to look more like them. The season also reveals that it was Burnham's relationship with Spock that allowed him to "fully actualize himself" with
James Kirk in the original
Star Trek series, which was an important development for Kurtzman to explore when telling this part of Spock's life. The season finale had to answer all the season's mysteries, complete its character arcs, feature a large battle, and set-up stories for the next season. While planning this, the writers realized that they could not do justice to it all within a single episode's length. It was around this time that CBS added an additional episode to the season's order, which allowed the writers to expand their plans to a two-part season finale. Executive producer
Michelle Paradise compared the scope of the finale to a feature film. A goal of the showrunners for the season was to "cement
Discovery firmly in the timeline" by reconciling some of the apparent continuity errors from the first season, such as why Burnham has never been mentioned by Spock in the franchise or why
Discovery advanced
spore drive technology is not used on other starships in later
Star Trek series. The season ends with
Discovery and its crew traveling over 900 years into the future, and Spock recommending to Starfleet that the starship and its crew never be mentioned again to prevent the events of the season from being repeated. Kurtzman said this solution was chosen after months of work with the writers, which included considerations of the future of the series; he compared the decision to the film
Star Trek (2009) starting a new timeline to avoid established continuity.
Casting The season stars the returning
Sonequa Martin-Green as Burnham,
Doug Jones as
Saru,
Anthony Rapp as Paul Stamets,
Mary Wiseman as Sylvia Tilly, and
Shazad Latif as Voq / Ash Tyler.
Wilson Cruz reprises his guest role of Hugh Culber, who died in the first season, and is promoted to the main cast for the second. In April 2018, Anson Mount—who was considered for the role of Lorca in the first season—was cast as Pike, and a young Spock was confirmed to be appearing; Kurtzman noted that casting for Spock took into consideration a balance between Vulcan logic and revealing "emotion in the eyes and in the small gestures". Mount revealed in July that he would star for the full season, and that
Rebecca Romijn would portray the original series character
Number One. Mount and Romijn both signed one year deals for the series, with their characters included to help closer align the series to the wider
Star Trek continuity. In August,
Ethan Peck was announced as portraying Spock in the season. Kurtzman compared the actor to both Nimoy and Quinto and stated that he believed Peck "would, like them, effortlessly embody Spock's greatest qualities, beyond obvious logic: empathy, intuition, compassion, confusion, and yearning". An alternate ending to the first season was revealed in March 2018, introducing a
Section 31 agent named Leland who is portrayed by
Alan van Sprang. The producers confirmed that Van Sprang would be portraying the character in the second season. Van Sprang had worked with Berg and Harberts on the series
Reign, and they had been trying to find a character for him to play throughout production on the first season. The actor said his role was a "massive part" of the second season. The alternate ending saw Leland approach
Michelle Yeoh's Philippa Georgiou about joining Section 31, and, in February 2018, Kurtzman said that it was possible for Yeoh to reprise the role in the second season along with
Jason Isaacs as Gabriel Lorca. Yeoh was confirmed to be appearing in the season to continue the Section 31 storyline in October 2018, while in January 2019, Kurtzman said Isaacs would not be appearing but could still return in the future.
Tig Notaro was cast in the guest role of Denise Reno in April 2018. She later revealed that this would be a recurring role for the season, and that she had been able to rename her character to Jett Reno. That October, Martin-Green announced that her husband Kenric Green had been cast for the season, and would be making an "indelible contribution". He portrays Burnham's father Mike in a flashback in the episode "Perpetual Infinity", while
Sonja Sohn portrays her mother Gabrielle. The latter is revealed to be the "Red Angel", a character seen throughout the season. Several other recurring guests also return from the first season, including
James Frain as
Sarek,
Mia Kirshner as
Amanda Grayson,
Mary Chieffo as L'Rell, and
Jayne Brook as Katrina Cornwell. Introduced in the season are
Bahia Watson as May Ahearn and Rachael Ancheril as Nhan.
Kenneth Mitchell, who had a recurring role in the first season as the Klingon Kol, appears in the second season as Kol's relative Kol-Sha. He also portrays the older version of Tenavik, the son of L'Rell and Tyler.
Hannah Cheesman took over the role of Airiam for the season, with original actress Sara Mitich recast in the role of Nilsson. Other returners include
Emily Coutts as Keyla Detmer,
Patrick Kwok-Choon as Gen Rhys, Oyin Oladejo as Joann Owosekun, Ronnie Rowe Jr. as R. A. Bryce, Ali Momen as Kamran Gant, and Julianne Grossman as the voice of
Discoverys computer. David Benjamin Tomlinson also appears throughout the season as Linus. Hannah Spear and
Yadira Guevara-Prip respectively reprise their
Star Trek: Short Trek roles of Saru's sister Siranna (from the short "The Brightest Star") and Tilly's friend Me Hani Ika Hali Ka Po (from the short "Runaway"). The episode "If Memory Serves" begins with archival footage from the original
Star Trek pilot "
The Cage" featuring the original actors for several characters seen in the series, including Spock, Pike, and Number One, as well as
Vina and the Keeper, portrayed in
Discovery by
Melissa George and Rob Brownstein, respectively.
Design Costumes Costume designer Gersha Phillips and her team created over 180 different costumes for the season. For the
Enterprise costumes, Phillips applied the colors from the costumes seen in the original series to the design and style of the
Discovery uniforms. She noted that the collars on the
Discovery uniforms already evoked the v-shape design of the original uniform collars. The difference in uniforms between the
Discovery and
Enterprise crews is explained when a character remarks that the more colorful uniforms are new and being introduced to Starfleet starting with
Enterprise. Phillips and her team overlooked the fact that the
Discovery uniforms identify rank through pips on their Starfleet badges which are not present on the
Enterprise uniforms, and so there was no identification of rank on any of the
Enterprise characters. The mistake was pointed out by John Van Citters, the vice president of
Star Trek brand management at CBS Studios, and the solution was to add stripes to the sleeves of the uniforms. Visual effects were used to add these stripes to footage from before the mistake was discovered. Phillips was asked to make the Section 31 costumes black, and to not give the characters a uniform. Phillips made sure these costumes were different from the cleaner style of the main Starfleet uniforms to highlight the different types of people hired by Section 31 and their different approach. She noted that this was appropriate for Georgiou, who Phillips felt "wouldn't wear a uniform, because she's not going to conform". Kurtzman's directions to Phillips regarding the Talosians was to look at the costumes from the original series and "revamp" them. After seeing her first designs for the costumes, Kurtzman asked her to take them further. Phillips used fabrics with puffy textures printed onto them for the costumes. The Talosians also wear necklaces that were designed in collaboration with jeweler Dana Schneider. The Red Angel suit was inspired by
Scarlett Johansson's costume from the film
Ghost in the Shell (2017), with
Discoverys prop master Mario Moreira contributing to the design. It was created with companies Plassens and By Design using 3D printing. Phillips stated that all the actors who wore the suit said it was one of the most comfortable to wear, noting that this is not usually the case for actors wearing complex costumes. For the Klingons, Phillips was excited to depict the species in a time of peace, and was able to produce several different costumes that were not warrior-based. Phillips noted that in previous appearances groups of Klingons were often depicted as wearing the same costume, but on
Discovery there was a mandate to have more diverse looks within groups of aliens. L'Rell's costumes are provocative to show the character as "just being the woman that she [is] and have her feel more of a full character". Phillips was inspired by various Klingon costumes from
Star Trek: The Next Generation for the season. One of L'Rell's dresses was created from a jumpsuit bought from Gelareh Designs, a clothing company that Phillips calls "the Klingon store". A cape for the dress was made from leather pieces that were lifted from the jumpsuit and painted.
Prosthetics Glenn Hetrick and Neville Page of Alchemy Studios, who provide prosthetics and armor for the series, teased in May 2018 that the season would feature a "truly alien" character for which they had to figure out new ways to reduce the weight of the prosthetics and make it breathable for the actor, as well as try improve the actor's vision because the eyes of the creature did not align with where human eyes are positioned. Hetrick said there would be more interesting prosthetics for extras, while the pair were able to use a species from earlier
Star Trek canon that had not been in the first season after producing a of species they would like to use for the executive producers.
Starships Several new sets for the
Discovery were built for the season, adding to the ones constructed for the first. These included a new "loop corridor" and new entrances to the mess hall and sick bay sets. The engineering set from the first season was also renovated for the second, with production designer Tamara Deverell explaining that the cinematography department had issues with the large amount of light coming from the spore chamber in contrast to the rest of the room. Additionally, some season one sets were repurposed for the second season, with Lorca's season one ready room becoming a new science lab for Burnham in the second season.
John Eaves and Scott Schneider, designers of the starships for the series, were required to redesign the USS
Enterprise for
Star Trek: Discovery, making it 25 percent different from
Matt Jefferies' original design due to legal concerns regarding the ownership of different
Star Trek elements. CBS ultimately confirmed that they were free to reuse Jefferies' design in
Star Trek: Discovery, but stood by the changes made by Eaves and Schneider as creative improvements that took advantage of modern visual effects. These changes included adding elements that could realistically be removed or replaced in the time between this series and the beginning of the original series. The visual effects department made further adjustments to the design after Eaves and Schneider completed their work. The final version of the ship seen in the series also adopts some of the characteristics of the
Enterprise from the films, such as being "a little bit fatter, a little bit bigger", to fit into the aesthetic of the series. Elaborating on this, Kurtzman explained that the original designs for the
Enterprise would look out of place in the series due to the far more advanced modern technology being used to produce the show. He added that any sets designed for the
Enterprise would bridge the look of the original series and
Discovery while still trying to adhere to canon. There had been plans to show the interior of the
Enterprise during the first-season finale, but this was ultimately saved for the second season. Deverell did extensive research on the original sets before trying to recreate them using
Discoverys style, including searching through the CBS archives to do color tests on the original bridge sets which feature a distinctive red that sometimes appeared to be orange on the original series (
Discovery includes a joke about the bridge being orange, though Deverell insisted that it is red). The
Enterprise bridge set was built on a new soundstage specifically for the two-part second season finale, rather than being a repurposed set.
James Cawley, owner of the
Official Star Trek Set Tour, provided reproductions of the buttons from the original bridge set for Deverell to base hers on.
Filming Filming for the season began at
Pinewood Toronto Studios on April 16, 2018, under the
working title Green Harvest. Production was set to take place at the studio until November 8. At the time of Berg and Harberts' firing, production was underway on the fifth episode of the season, and a hiatus in filming was planned to follow that. This allowed Kurtzman to take the time to "regroup" the writing staff without delaying the season's production. The production was ultimately delayed enough that it needed to extend its time at Pinewood in order to complete the season, and to amortize these costs CBS added an additional episode to the season's run, which pushed the end of filming on the season to December 21. Due to the delay, episodic director
Jonathan Frakes ultimately directed the ninth episode of the season instead of the originally planned tenth. Kurtzman hoped that if the series was projected in a theater it would appear indistinguishable from a feature film, and chose to use
anamorphic lenses for the season to "immediately [convey] a sense of scope and scale". He also pushed the lighting and design departments to use color in ways that are not traditionally considered for television, and challenged the episode directors to each shoot a scene where they would not use the same shot twice; this was to encourage them to use more inventive shot choices rather than just typical "coverage", which is when a master shot of the scene is filmed plus whatever extra angles from different sides there is time to capture. Kurtzman wanted as many options available to the editors as possible during post-production. Addressing the fact that
Star Trek was originally inspired by
naval tradition, Kurtzman said that the season would be leaning further into that than the first did, especially in the way that they filmed the bridge scenes and a funeral sequence. He named
Crimson Tide (1995) as an influence for the filming style. Frakes reiterated the cinematic approach to the series, especially comparing the camera work to the style of the
Star Trek films directed by
J. J. Abrams. He added that Osunsanmi encouraged the episodic directors to "express ourselves visually in as exciting a way as possible". During filming in August 2018, Mount was involved in an "on-set physical altercation" with a director when he touched them while rehearsing a pointing action before beginning a scene. The incident was reported to CBS's HR department who reviewed it and decided against any disciplinary action for Mount. The actor had apologized to the director at the time. The incident had no effect on Mount's involvement with the series, as work on the season continued without interruption and the series production was believed to be interested in working with Mount further despite his contract being only for the second season.
Visual effects The season's visual effects were provided by CBS Digital,
Crafty Apes, Filmworks FX, Fx3x, Ghost VFX,
Pixomondo, and Spin VFX. They include digitally created environments and set extensions to portray new planets, the starships, and space visuals, as well as digital enhancements to Saru's threat ganglia, and adding holograms and external visuals to the
Discovery. Completely digital sets created for the season include
Discoverys hangar and the mycelial network, with the actors performing in front of green screen for these. An on-set prop was used for Tyler and L'Rell's baby son Tenavik, with a digital head added that was animated using performance capture.
Music Composer
Jeff Russo planned to begin work on the second season in May 2018, after receiving the first script for the season. He did not expect to significantly change the tone of his music for the season, feeling that so much work in the first season had gone towards creating a unique sound for the series within the
Star Trek franchise which he would like to continue moving forward. Russo did feel that the score for the second season would focus more on the "swashbuckling" aspects he wrote at times for the first season. Russo generally works directly with the showrunners rather than any of the episodic directors but discussed his score for the season's second episode with director Frakes. A soundtrack album for the season was released digitally by
Lakeshore Records on July 19, 2019. It includes three cues from Russo's
Short Treks score. All music composed by Jeff Russo: ==Marketing==