You are probably thinking of Nate the Great by Marjorie Sharmat.
If you mean original Sherlock Holmes mysteries, the answer is Sir Arthur Conan Doyle.
Murder Rooms Mysteries of the Real Sherlock Holmes - 2000 The Dark Beginnings of Sherlock Holmes 1-0 is rated/received certificates of: Sweden:Btl
The Sherlock Holmes stories are all mysteries. They are detective stories where Holmes solves a mystery, often a murder. They are some of the earliest mysteries written and still extremely popular.
Murder Rooms Mysteries of the Real Sherlock Holmes - 2000 is rated/received certificates of: Australia:M
Nearly all books of Sherlock Holmes are suppose to be interesting but "The Hound Of Baskerville" is suppose to be a classic unless you consider "The Adventures of Sherlock Holmes"where most of his mysteries are there.
The Hound of the Baskervilles, and A Study in Scarlet
Murder Rooms Mysteries of the Real Sherlock Holmes - 2000 The Dark Beginnings of Sherlock Holmes 1-0 was released on: UK: 4 January 2000 USA: 18 May 2000 Sweden: 2 July 2002 Finland: 24 June 2003 Japan: 13 September 2004 Hungary: 5 November 2004
Sherlock Holmes amazes readers by his ability to plumb the deepest mysteries.
Sherlock Holmes' real name is Sherlock Holmes.
Sherlock Holmes 3
The Hound of the Baskervilles and A Scandal in Bohemina. A Study in Scarlet is also up there.
.... Sherlock Holmes