Circular Staircase, The by Mary Roberts Rinehart (1876 - 1958)
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Mary Roberts Rinehart (1876-1958) was a prolific American writer of popular mysteries. The Circular Staircase was originally published in 1908 and includes all the elements of the classic whodunit – mysterious events, ghostly apparitions, things that go bump in the night and murder. (Summary by J. M. Smallheer)