 While Annabelle sleeps, the same mysterious hand emerges from the wall behind her bed and snatches the diamonds from her neck. Once again, her sanity is questioned, but as Harry and Annabelle search the room, they discover a hidden passage in the wall and in it the corpse of Roger Crosby. Mammy Pleasant leaves to call the police, while Harry searches for the guard; Susan runs away in hysterics and hitches a ride with a milkman (Joe Murphy). Paul and Annabelle return to her room to search for the missing envelope, and discover that Crosby's body is missing. Paul vanishes as the secret passage closes behind him. Wandering in the hidden passages, Paul is attacked by the Cat and left for dead. He regains consciousness in time to rescue Annabelle. The police arrive and arrest the Cat, who is Charlie Wilder in disguise; the guard is his accomplice. Wilder is the person named in the second will; he hoped to drive Annabelle insane so that he could receive the inheritance.
