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From The Perry Mason TV Show Book
Wesley Lau, who would later go on to play a starring role as Lt. Anderson in the Mason series, plays Amory Fallon, a paint manufacturer who suspects his partner of embezzling from his company and sleeping with his wife.
When Fallon decides to confront his partner he makes the mistake of drinking too much beforehand. He passes out near the guy's apartment, and when he comes to, his partner is dead. Faced with a murder charge, not to mention a hangover, Fallon retains Perry.