Morris Chestnut Dr. John Watson Actor, Executive Producer Eve Harlow Dr. Ingrid Derian Actor Peter Mark Kendall Dr. Stephens Croft, Dr. Adam Croft Actor Ritchie Coster Shinwell Johnson Actor Inga Schlingmann Dr. Sasha Lubbock Actor Rochelle Aytes Dr. Mary Morstan Actor Johnno Wilson Joseph Bell Actor Vincent Gale Mycroft Holmes Actor Carlena Britch Ria Actor Jamall Johnson Ranger Actor Cindy Piper Ruth Actor Craig Sweeny Executive Producer Aaron Kaplan Executive Producer Larry Teng Executive Producer Brian Morewitz Executive Producer Shäron Moalem Executive Producer Sallie Patrick Executive Producer Anna Mackey Writer Clara Aranovich Director