Guest Stars Khandi Alexander as Chief Medical Examiner Dr. Alexx Woods Omar Benson Miller as Walter Simmons Lance Barber as Al Wayons Jack Conley as Seth Ellers Steven Culp as Jerry Mackey Craig Anton as Sheldon Parks Charles Parnell as Gavin Webb Caroline Aaron as Dr. Miller Bobby Campo as Ethan Durant Sandra Purpuro as Rhea Ajay Mehta as Doctor Co Starring Evan Lai as EMT Katy Stoll as Lucy