Case Three (Part 1)

When a babysitter is murdered, the only witness thinks she saw the bogeyman do it. Chandler, Miles, and the team suspect a dangerous patient and former Whitechapel resident, obsessed with Lon Chaney and London After Midnight, who's recently escaped from a psychiatric unit. Meanwhile, Buchan, guilt-ridden over his failure in the previous case, is unsure if he should remain a murder-archivist.