Endless Night is a late-career, standalone masterpiece by Agatha Christie, published in 1967, and is often considered one of her most chilling and psychologically complex novels. It is narrated by Michael Rogers, a young, working-class man obsessed with the beautiful, secluded property known as "Gipsy's Acre," where he dreams of building his perfect home. He meets and quickly marries Ellie, a wealthy, innocent American heiress who buys the property against local warnings of an old curse. The couple builds their dream home, but a mounting sense of dread, strange events, and the introduction of manipulative characters turn their paradise into a nightmare. The novel breaks from Christie's traditional whodunit structure, employing a first-person narrative that expertly conceals a stunning, dark twist. It is a brilliant study of obsession, psychopathy, and the destructive nature of hidden evil.