The Crocodile Case is an episode of Alfred Hitchcock Presents.
Jack Lyons is interrogated by the police. He accidentally reveals himself as a murderer when he identifies a crocodile dressing case and the initials engraved on it. Since the initials were engraved on it shortly before the murder and fell off during the murder, only the killer and victim could have known about them. Jack is promptly arrested
Hazel Court as Phyllis Chaundrey
Denholm Elliott as Jack Lyons
Patricia Hitchcock as Aileen