Simon Helberg (The Big Bang Theory) has joined the cast of the Rian Johnson Peacock series Poker Face, Variety had reported. He joins Natasha Lyonne (Orange Is the New Black), who will lead the murder mystery.

Following a procedural murder mystery format, Lyonne’s character will solve a new murder with each episode. Character and plot details are under wraps. It will have a star-studded cast with Joseph Gordon-Levitt, Adrien Brody, Benjamin Bratt (Coco), Stephanie Hsu (The Marvelous Mrs. Maisel), David Castañeda (The Umbrella Academy), Jameela Jamil (The Good Place), Tim Meadows (Bob’s Burgers), and more.

The Rian Johnson Peacock series has a 10-episode order from the streamer. He created the series and will executive produce it through T-Street Productions. Lyonne executive produces under Animal Pictures, with Maya Rudolph and Danielle Renfrew. Nora and Lilla Zuckerman will be showrunners and executive producers. Ram Bergman and Nena Rodrigue of T-Street will executive produce. MRC Television will produce.

Simon Helberg joins Rian Johnson Peacock series ‘Poker Face’

The Big Bang Theory star was in the series throughout its 12-season run, which earned 10 Emmys in that time. He is known for films like As They Made Us, Annette, Florence Foster Jenkins, Good Night and Good Luck, and A Serious Man. He most recently starred in the sci-fi comedy Space Oddity, directed by Kyra Sedgwick (The Closer).

Along with the Peacock series Poker Face, Rian Johnson will release Glass Onion: A Knives Out Mystery later this year. The highly-anticipated sequel to his hit whodunit will star Dave Bautista, Ethan Hawke, Jessica Henwick, Kathryn Hahn, and Daniel Craig, who will reprise his role as Benoit Blanc. Due to a deal with Netflix, another movie will be in the works, but no details are known about Knives Out 3; but based on this upcoming murder mystery, it may have a goofy title.