Jack Lyons sets up a roadblock for the unsuspecting Arthur Chaundry. Jack clubs Arthur over the back of the head when Arthur gets out of his car, murdering the gentleman in order to be with his wife Phyllis. Jack tells Phyllis that unless she cooperates with him, she will be seen as an accomplice to murder, since she telephoned her husband and told him to take a shortcut that landed him as Lyons' prey. Jack and Phyllis are interrogated by the police, and Phyllis raises some suspicion when she shows more consternation about her missing crocodile case that was in the car than she does her dead husband. A year later, the couple are married but far from happy. Phyllis is involved with another man and Jack can not seem to please her materialistic whims, even when he tries to replace the coveted crocodile case with another. After Phyllis has taken off with another man, the police come by again. They ask Jack to identify a man who once worked for him who is under suspicion for stealing the contents of Arthur's car. Jack accidentally reveals himself as a murderer when he identifies a crocodile dressing case and the initial's engraved on it. Since the initials were engraved on it only the same day as the murder, only the killer and the victim could have known about them.