Dana Delany Dr. Megan Hunt Actor Jeri Ryan Dr. Kate Murphey Actor John Carroll Lynch Detective Bud Morris Actor Nicholas Bishop Peter Dunlop Actor Sonja Sohn Detective Samantha Baker Actor Geoffrey Arend Dr. Ethan Gross Actor Windell Middlebrooks Dr. Curtis Brumfield Actor Mary Mouser Lacey Fleming Actor Jamie Bamber Guest Star Khandi Alexander Guest Star Sean Kingston Guest Star Jason Beghe Guest Star Tanc Sade Guest Star Patrick Fischler Guest Star James Carpinello Guest Star Mark Espinoza Guest Star Joanna Cassidy Guest Star Christopher Murphey Executive Producer Matthew Gross Executive Producer, Director Sunil Nayar Executive Producer Cory "Zooman" Miller Writer