Mannix/Duet for Three
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Duet for Three is the thirteenth episode of the fourth season of Mannix, and the eighty-seventh episode overall.
Special Guest Star: Gloria Grahame (Mae)
Co-Starring: John Considine (Mart Gray)
After a client is killed shortly after meeting with him, Mannix is hired by his distraught widow. The client claimed that his wife was being harassed, but the wife denies that anything happened to her.