Driven to madness by the cruelty of a small group of people, a young novelist sets about taking murderous revenge.Simon Whalley is an unsuccessful novelist who is gradually going to pieces under the strain of successive setbacks. Brooding over his troubles, and driven to despair by the cruelty of his neighbours, he decides to take his revenge in the only way he knows how – by planning to murder them . . .Lynn Brock made his name in the 1920s and 30s with the popular ’Colonel Gore’ mysteries, winning praise from fans and critics including Dorothy L. Sayers and T. S. Eliot. In 1932, however, Brock abandoned the formulaic Gore for a new kind of narrative, a ’psychological thriller’ in the vein of Francis Iles’ recent sensation, Malice Aforethought. Advertised by Collins as ’one of the most remarkable books that we have ever published’, the unconventional and doom-laden Nightmare provided readers with a disturbing portrayal of what it might take to turn an outwardly normal man into a cold-blooded murderer.This Detective Story Club Classic is introduced by Rob Reef, author of the ’John Stableford’ Golden Age mysteries, who finds philosophy at the heart of Brock’s landmark crime novel.