Nowhere to Go — Donald MacKenzie

Paul Gregory, a Canadian confidence trickster operating in London, targets a wealthy Canadian woman in Britain to sell her collection of valuable coins. When she agrees to give him legal control over the sale, he completes the deal without her knowledge, stashes the proceeds in a safe deposit box, and then deliberately waits to be caught by the police. Gregory plans on getting a five-year sentence, with time off for good behaviour, and then collecting his loot when he is released. But when the judge hands Gregory a ten-year term, his only way out is escape...