Main •
Kathy Bates as Madeline "Matty" Matlock / Madeline Kingston, who claims to be a widowed lawyer, returning to the workforce following decades of retirement due to financial distress from her husband's gambling troubles, and having to raise her grandson following her daughter's death in a car accident. Matlock takes a job as an
associate at the law firm Jacobson Moore, working with Olympia, a junior partner at the firm who becomes her boss. In fact, Kingston is wealthy and happily married, though indeed grieving the loss of her daughter who died from an opioid overdose and seeking retribution. She gave herself the alias of "Matlock" after the original television series. •
Skye P. Marshall as Olympia Lawrence, a
junior partner at Jacobson Moore who becomes Matlock's boss. In the pilot episode, she is in the midst of divorcing Julian while aiming at a senior partner role with the support of her father-in-law. Olympia is reluctant to take Matty under her wing as she acknowledges that Matty is the threat to her promotion in the law firm due to her exceptional skills. •
Jason Ritter as Julian Markston, a
senior partner at Jacobson Moore. In the pilot episode, he is in the midst of divorcing Olympia and engaged in a major settlement action involving a large pharmaceutical corporation. •
David Del Rio as Billy Martinez (seasons 1–2), a first-year
associate at Jacobson Moore working with Olympia. Del Rio makes his last appearance in episode 7 of the second season following his dismissal from the series. •
Leah Lewis as Sarah Franklin, a first-year
associate at Jacobson Moore working with Olympia • Aaron Harris as Alfie Kingston (season 2; recurring season 1), Madeline's genius grandson who is in charge of the family's technical operations •
Sam Anderson as Edwin Kingston (season 2; recurring season 1), Madeline's husband
Recurring •
Eme Ikwuakor as Elijah, an attorney at Jacobson Moore who was in a romantic relationship with Olympia •
Beau Bridges as Howard "Senior" Markston, a managing partner at Jacobson Moore, father of Julian, and soon-to-be ex-father-in-law of Olympia. He guardedly supports Olympia's career and efforts to develop a new revenue stream for the firm, telling her how he believes being father-in-law is a forever role. •
Patricia Belcher as Mrs. B, an administrative manager at Jacobson Moore. It is later revealed her full name is Emmalyn Belvin. •
Yael Grobglas as Shae Banfield, a jury consultant at Jacobson Moore •
Piper Curda as Kira, a woman who works at the information technology (IT) department at Jacobson Moore who begins a relationship with Sarah •
Marnee Carpenter as Ellie Kingston, Matty and Edwin's deceased daughter and Alfie's mother •
Andrea Londo as Simone, a recently hired junior associate at Jacobson Moore who attended the same law school as Sarah •
Niko Nicotera as Joseph "Joey" Danza, Alfie's father who is a drug addict •
Justina Machado as Eva (season 2), Senior's fourth ex-wife who is also a lawyer and member of the executive committee at Jacobson Moore •
James Lesure as Lester "The Wolf" Logan (season 2) •
Justin Cornwell as Mr. Hodges (season 2), Olympia's love interest who is also a lawyer •
Sarah Wright Olsen as Gwen (season 2), a productivity consultant evaluating Jacobson Moore • Henry Haber as Hunter (season 2), an eager new associate on Olympia's team
Special guest star •
Gina Rodriguez as Lida Gutierrez (season 2), a Department of Justice Special Agent ==Episodes==