Alligator--ex-convict turned private detective--finds himself pulled into a disturbing case involving an Italy known to few. Helena and Mariano Giraldi lead a secret double life in Italy's clandestine S&M scene. When Helena is abducted, her husband approaches Alligator for help. But Mariano seems more worried about losing his reputation than seeing his wife again. As Alligator investigates, he uncovers a world in which brutality, treachery, and passion go hand in hand. Behind Helena's abduction is a shadowy figure known as The Master of Knots--who proves to be as powerful as he is psychotic. As more members of the S&M underground disappear, Alligator races desperately against time to find his true identity.