The Sign of Four was the second novel featuring which famous fictional detective, following A Study In Scarlet?
The Sign of Four (2001 film) The Sign of Four (2001) is a Canadian television film directed by Rodney Gibbons and starring Matt Frewer and Kenneth Welsh. The movie is based on Arthur Conan Doyle's second Sherlock Holmes story.
The Judas Window The Judas Window (also published as "The Crossbow Murder") is a famous locked room mystery novel by the American writer John Dickson Carr (1906–1977), writing under the name of Carter Dickson, published in 1938 and featuring detective Sir Henry Merrivale.