It was a fatal mistake for Nigel Playford to bring his beautiful sister Cynthia to the magicians' convention at the small seaside hotel in Wales. She had no talent at all for sleight of hand, and an absolute genius for making enemies. Before the curtain could rise on the main event, she managed to upstage the entire performance by getting herself killed.
An unusually close brother and sister, her married lovers, the long-suffering wives, and a professional clairvoyante. All gathered at a magicians' convention at a small seaside hotel in Wales. Abracadabra...murder!