Welsh Canadian globetrotting sleuth, and professor of criminal psychology, Cait Morgan, is supposed to be "celebrating" her fiftieth birthday in Jamaica with her ex-cop husband Bud Anderson. But when the body of the luxury estate's owner is discovered locked inside an inaccessible tower, Cait and her fellow guests must work out who might have killed him - even if his murder seems impossible. Could the death of the man who hosted parties in the...