Morris Chestnut Dr. John Watson Actor, Executive Producer Rochelle Aytes Dr. Mary Morstan Actor Eve Harlow Ingrid Derian Actor Peter Mark Kendall Dr. Stephens Croft, Dr. Adam Croft Actor Ritchie Coster Shinwell Johnson Actor Inga Schlingmann Sasha Lubbock Actor Anjelica Bette Fellini Erika Filipello Actor Shannon Berry Autumn Franco Actor Randall Park Moriarty Actor Jean Zarzour Erika's Mother Actor Alejandra Chavarria O.R. Nurse Actor Lesley Mirza Prenatal Nurse Actor Grace Gouwens Clinic Volunteer Actor Andrew Dobbie Croft Twin Actor Riley Orr Croft Twin Actor Brad Bergeron Damon Filipello Actor Alexandra Khan-Anselmo Dorothy Ward Actor Craig Sweeny Executive Producer, Writer Aaron Kaplan Executive Producer Larry Teng Executive Producer, Director Brian Morewitz Executive Producer Shäron Moalem Executive Producer Sallie Patrick Executive Producer Brook Willard Cinematographer Paul Leonard-Morgan Original Music