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 Caroline Aaron as Dr. Miller Charles Parnell as Gavin Webb Bobby Campo as Ethan Durant Sandra Purpuro as Rhea Craig Anton as Sheldon Parks Ajay Mehta as Doctor Co Starring Evan Lai as EMT Katy Stoll as Lucy