A wealthy, middle-aged spinster arrives at the mansion she's rented for the summer while her own town house is being renovated. The mansion is the home of a millionaire local banker, who has left for California with his wife and stepdaughter. But all is not peace and relaxation in the vast villa. Before long, the spinster's house help is frightened out of her wits by various strange noises. What follows is a spooky tale of mysterious disappearances, murder, apparitions and weird goings on. The Circular Staircase by Mary Roberts Rinehart is her first published novel and was wildly popular when it first came out in 1907...

Mary Roberts Rinehart -- "America's Agatha Christie," as she used to be called -- set this story in a New York suburban town, shortly after the end of the first world war. Dick Livingstone is a young, successful doctor, who in the course of events becomes engaged to Elizabeth Wheeler. But there is a mystery about his past, and he thinks himself honor-bound to unravel it before giving himself to her in marriage. In particular, a shock of undetermined origin has wiped out his memory prior to roughly the last decade...