The third of four new mystery dramas inspired by the relationship between pathologist Dr Joseph Bell and the detective writer Sir Arthur Conan Doyle.
Young Doyle investigates when a museum curator commits suicide after a mummified body is removed from a shroud covered in hieroglyphs.
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(Postponed from 18 September)
BBC Radio Collection: the Complete Sherlock Holmes boxset contains all 18 volumes, price £150, or they can be bought separately for £9.99 each, available from retailers.