Perry Mason (1957)
S03E25 The Case of the Irate Inventor
Episode Overview
James Frazer seeks a divorce from his unfaithful wife, but she is unwilling to comply. In a desperate move, she steals the designs for his invention to keep her engineer lover interested. To clear his head, Frazer departs for three months. However, upon his return, he discovers his wife's body in his office, murdered. To make matters worse, he possesses the sole key to a special, burglar-proof lock that he created.