Gross began her career in the early 2000s with uncredited roles in the films
Men with Brooms and
Wilby Wonderful. She also worked on stage. In 2010, Gross played Katie in
Sharon Pollock's 1984 play
Doc and directed
Tennessee Williams'
A Streetcar Named Desire (1947) for the
Stella Adler Studio of Acting. She performed in Williams' 1953 one-act play
Talk to Me Like the Rain and Let Me Listen in 2012. Also in 2013, she played the title character in Dustin Guy Defa's short film
Lydia Hoffman Lydia Hoffman. Gross played the lead female character in Charles Poekel's film
Christmas, Again, which had its premiere at the 2014
Locarno International Film Festival. She also performed in Nathan Silver's 2014 film
Uncertain Terms, and reunited with him in his 2015 film,
Stinking Heaven. Also in 2014, Gross played the lead role in David Raboy's short film
Beach Week. In 2017, Gross achieved wider notice when she appeared in the
Netflix drama
Mindhunter, in which she played the supporting role of Debbie Mitford, a post-graduate student at the
University of Virginia. Gross did not return for the second season of
Mindhunter. Following her turn in the first season of
Mindhunter, Gross appeared in the films
Her Smell (2018),
Disappearance at Clifton Hill (2019),
Falling (2020), and as
Mina Edison in
Tesla (2020), the latter of which premiered at the
2020 Sundance Film Festival. Gross also appeared as the younger version of
Young Penny Fleck in the box office hit
Joker (2019). Gross starred opposite
Michael Cera and
Sophia Lillis in the comedy drama film
The Adults, written and directed by
Dustin Guy Defa, which competed for the Encounter Award at the
73rd Berlin International Film Festival, where it had its world premiere on February 18, 2023. == Filmography ==