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 Jeffrey Nordling Guest Star Cody Christian Guest Star Paul David Story Guest Star Tom Gallop Guest Star Ken Costanza Guest Star Christopher Murphey Executive Producer Matthew Gross Executive Producer Sunil Nayar Executive Producer Andrew Dettman Writer John Terlesky Director