In Death in Ecstasy, Ngaio Marsh presents a thrilling mystery set within an unconventional religious cult, where Inspector Roderick Alleyn finds himself entangled in a case filled with deception, secrecy, and deadly intentions. The story unfolds when a young woman named Cara Quayne dies suddenly during a mysterious ceremony at the House of the Sacred Flame. Her death appears to be poisoning, but the circumstances are suspicious, and each member of the cult becomes a potential suspect. Inspector Alleyn is called in to investigate, and he soon uncovers a web of complicated relationships, hidden resentments, and twisted motives among the cult members. As he navigates the strange rituals and psychology of the group, Alleyn must use all his skill to uncover the truth behind Cara's death. Marsh combines psychological suspense with a classic whodunit structure, creating an atmospheric and engaging story that delves into the darker sides of human nature. Death in Ecstasy is a fascinating addition to the Roderick Alleyn series, offering readers a richly detailed and suspenseful journey into the world of cults and crime.