Interference (1928)

Paramount's 1st ALL TALKIE Reported killed in action, Philip Voaze(William Powell) lives under an assumed name in London. Deborah Kane(Evelyn Brent) a former love, discovers him and tries to blackmail his wife, Faith(Doris Kenyon), who has since remarried. Learning of this attempt and that he has a fatal heart disease, he kills Deborah and turns himself in to the police.