Blackmail (85 min. ; 1929): "When Frank's job at Scotland Yard comes between them, Alice accepts a date with another man. The handsome artist invites Alice to pose for a portrait but then tries to assault her. She kills him in self-defense. Assigned to the case, Detective Frank soon learns the identity of the killer, but so has someone else... During production of this [originally] silent feature, Hitchcock added dialogue with the advent of talking...