|Maxwell Smart, Private Eye|
|Original Air Date||October 21, 1967|
|Villain||Mr. Peter and Mr. Sydney|
- Maxwell Smart - Don Adams
- Agent 99 - Barbara Feldon
- The Chief - Edward Platt
- Agent 34 - Ralph Leabow
- Larrabee - Robert Karvelas
- Agent 72 (Sam) (Uncredited)
- Mr. Peter (Fat Man) - Berry Kroeger
- Mr. Sydney (Little Man) -Phil Roth
- Wilbur - Buddy Hackett (uncredited)
- Trinka Markoff - Roxane Berard
- Mrs. Weatherly - Lynn Borden
- Reporter - Don Ross
- Man in Cab - Gordon Jump
Director Bruce Bilson won the 1968 Emmy Award for Outstanding Directorial Achievement in Comedy for this episode.
Hiding behind the generic title this episode is a parody of hard-boiled detective movies, especially 1941's The Maltese Falcon, giving Don Adams his second of three opportunities to show off his Humphrey Bogart impression (the others being Episode #36: "Casablanca" and Episode #117 "The Treasure of C. Errol Madre").
The "Big Man" and "Little Man" villains are caricatures of frequent Bogart co-stars Sydney Greenstreet and Peter Lorre with the twist that their names have been reversed (a similar pair appear in the earlier Casablanca-themed episode) while "Wilbur" refers to Maltese Falcon character "Wilmer Cook" and "Mrs. Weatherly" to "Miss Wonderly", the femme fatale of the movie.