The Crooked Hinge — John Dickson Carr

WHICH MAN WAS THE REAL JOHN FARLEIGH?

A young man named John Farleigh is rescued from the sinking Titanic and continues on his way to America. Twenty-five years later he inherits a large estate in England and returns there to live. Another man appears who says he is the real John Farleigh -- that as a boy he had also been taken off the doomed ship. Then one of the claimants is found with his throat cut, and it is up to Dr. Gideon Fell to find the answers to baffling questions: Was the death suicide of murder? If murder, who is the killer and why? And which of the two is in fact John Farleigh? Dr. Fell's solution is one of his masterpieces of logical reconstruction.