What genre, usually involving a mysterious death, is exhibited by a book who features detective Sir Henry Merrivale?
Night at the Mocking Widow Night at the Mocking Widow is a mystery novel by the American writer John Dickson Carr (1906–1977), who published it under the name of Carter Dickson . It is a whodunnit and features the series detective Sir Henry Merrivale.
The Demoniacs The Demoniacs, first published in 1962, is a detective story/historical novel by John Dickson Carr set in the London of 1757. This novel is a mystery of the type known as a whodunnit as well as being a historical novel.