Lestrade was a fictional character from Arthur Conan Doyle's Sherlock Holmes stories. Inspector Lestrade appeared in the Sherlock Holmes Program 3A in 2365, asking Holmes (played by Data) for help in two criminal cases. The first was the apparent theft of a photograph, which was to be used for blackmail against the King of Bohemia. The second was the murder of an ex-convict by his wife. Holmes could solve both cases for Lestrade with ease. (TNG: "Elementary, Dear Data" )