A rising young director is shooting a frightening film about a serial killer in a hockey mask. But when a man goes missing near the set, a real-life horror story unfolds. Keith Morrison’s latest Dateline original podcast series takes us into a mysterious netherworld of illusion, fantasy, deception and death. Follow The Man in the Black Mask now and get two new episodes a week, starting October 15 -- completely free. Or subscribe to Dateline Premium now, for early access and ad-free listening.