About this programme
4/4. Crusty senior diplomat Mycroft Holmes enlists the help of his more famous younger brother Sherlock to recover missing submarine plans vital to national security. Guest starring Charles Gray.
Cast and crew
Cast
- Sherlock Holmes
- Jeremy Brett
- Dr John Watson
- Edward Hardwicke
- Mycroft Holmes
- Charles Gray
- Sidney Johnson
- Geoffrey Bayldon
- Insp Bradstreet
- Denis Lill
- Col Valentine Walter
- Jonathan Newth
Crew
- Director
- John Gorrie
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