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 Jeffrey Nordling Guest Star Cliff Curtis Guest Star Jay O. Sanders Guest Star Shana Dowdeswell Guest Star T.V. Carpio Guest Star Christopher Murphey Executive Producer Matthew Gross Executive Producer Sunil Nayar Executive Producer, Writer Christine Moore Director