Sherlock Holmes's War of the Worlds is a sequel to H. G. Wells's science fiction novel The War of the Worlds, written by Manly Wade Wellman and his son Wade Wellman, and published in 1975. It is a pastiche crossover which combines H. G. Wells's 1897 extraterrestrial invasion story with Sir Arthur Conan Doyle's Sherlock Holmes and Professor Challenger stories. The book is composed of stories originally published in The Magazine of Fantasy & Science Fiction.