The Sleeping Sphinx by John Dickson Carr

In this gripping mystery, a young woman named Celia Devereux finds herself entangled in a web of intrigue and danger when she inherits a house with a dark past. As she delves into the secrets of the mansion, she encounters a series of puzzling events and eerie occurrences that suggest the presence of a malevolent force. With the help of the astute Dr. Gideon Fell, Celia must unravel the truth behind the sinister happenings, confronting hidden motives and long-buried secrets that threaten to consume her. The story masterfully blends elements of suspense, supernatural hints, and classic detective work, keeping readers on the edge of their seats until the final revelation.