The Deadly Percheron by John Franklin Bardin
This novel is a captivating blend of mystery and psychological thriller, set in post-World War II New York. The story follows a psychiatrist who becomes embroiled in a bizarre case involving a patient who claims to be part of a complex scheme orchestrated by leprechauns. As the psychiatrist delves deeper, he finds himself caught in a web of murder, amnesia, and intrigue, challenging his perceptions of reality and sanity. The narrative takes unexpected twists, exploring themes of identity, madness, and the thin line between truth and illusion, making it a compelling read for fans of unconventional detective stories.