Mental patient Joe is saved from jumping under a train by Sandor. He is a "Gallowglass", a man forever indebted to the man who saved him. Joe joins Sandor as heads to Suffolk in search of beautiful ex-model held by an obsessive husband.

Sandor's attempt to buy off bodyguard Paul Garnet and get access to Nina fails. Garnet falls for Nina and their relationship becomes intimate. Sandor decides to kidnap his daughter using Joe's sister Tilly in the role of a nurse.

Garnet confesses to Nina about his daughter's kidnapping and she goes to Sandor. The Mafia were behind kidnapping her in Rome but Sandor gave the money back. They now know where to find Nina and take revenge by murdering her.