Nicholas Meyer based on his 1974 novel of the same name.
- Nicol Williamson as Sherlock Holmes
- Robert Duvall as John Watson
- Alan Arkin as Sigmund Freud
- Laurence Olivier as Professor Moriarty
- Charles Gray as Mycroft Holmes (a role he reprised in the Jeremy Brett TV series)
- Samantha Eggar as Mary Watson
- Vanessa Redgrave as Lola Devereaux
- Joel Grey as Lowenstein
- Jeremy Kemp as Baron von Leinsdorf
- Jill Townsend as Mrs Holmes
- Movie Review, The Seven Per Cent Solution (1976), 'Seven-Per-Cent Solution' Movie An Exhilarating Collector's Item, By VINCENT CANBY, Published: October 25, 1976.
- The Seven Per-Cent Solution at IMDB
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