The Witch of the Low Tide Author:John Dickson Carr Lady Betty Calder is a prostitute and a blackmailer -- or is it her sister Glynis, using her name? Dr. David Garth, her fiance, knows he must find out the truth -- especially when he blunders across Glynis' strangled body on Betty's property, surrounded by fifty feet of wet sand with no footprints but her own. The police know she did it,... more » but David knows she didn't, and he must outwit a cunning murderer and a hostile detective-inspector to prove it. What he discovers -- about his best friend's wife, his medical assistant, and even his fiance -- make him wish the blackmailing Glynis had never lived.« less