Dana Delany Dr. Megan Hunt Actor Jeri Ryan Dr. Kate Murphey Actor Mark Valley Detective Tommy Sullivan Actor Elyes Gabel Detective Adam Lucas Actor Geoffrey Arend Dr. Ethan Gross Actor Windell Middlebrooks Dr. Curtis Brumfield Actor Mary Mouser Lacey Fleming Actor Luke Perry Guest Star Craig Bierko Guest Star Marisa Ramirez Guest Star Jude Ciccolella Guest Star Hannah Leigh Guest Star Chase Kim Guest Star Sharon Lawrence Guest Star Joanna Cassidy Guest Star Christopher Murphey Executive Producer Matthew Gross Executive Producer Sunil Nayar Executive Producer Allen MacDonald Writer Eric Laneuville Director