Sinners director Ryan Coogler recently revealed that a personal fear directly informed the themes of his latest film, which stars Michael B. Jordan in dual roles as twins.

Appearing on Amy Poehler’s podcast Good Hang, Coogler said he has a longstanding phobia of doppelgängers. “I have a crippling fear of doppelgängers. Like a straight up phobia,” he explained. When Poehler asked...