Dana Delany Dr. Megan Hunt Actor Jeri Ryan Dr. Kate Murphey Actor Mark Valley Detective Tommy Sullivan Actor Geoffrey Arend Dr. Ethan Gross Actor Windell Middlebrooks Dr. Curtis Brumfield Actor Elyes Gabel Detective Adam Lucas Actor Mary Mouser Lacey Fleming Actor Ivan Sergei Guest Star Guri Weinberg Guest Star Deborah Strang Guest Star Natasha Alam Guest Star Richard Burgi Guest Star Christopher Murphey Executive Producer Matthew Gross Executive Producer Sunil Nayar Executive Producer Diane Ademu-John Writer Christine Moore Director