Star Marcia Gay Harden has been the mainstay, but original cast members Bonnie Somerville and Raza Jaffrey left after the first season, Rob Lowe joined in season 2, Melanie Chandra leaving at the end of season 2, and Moon Bloodgood coming on as a regular for season 3.
Code Black airs Wednesdays at 10 p.m ET[...]