Season 7, Episode 5 The Mazarin Stone
First Aired: July 22, 2009
Mycroft Holmes (Charles Gray) helps Watson retrieve a diamond stolen from a museum.
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- Premiered: April 24, 1984
- Rating: None
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- Premise: Sir Arthur Conan Doyle's legendary detective uses his keen powers of deduction in a series of cases which first aired on PBS's 'Mystery.' (more)