Watch Your Back! — Donald E. Westlake

In his classic caper novels, Donald E. Westlake turns the world of crime and criminals upside-down: the bad get better, the good get worse, and God save anyone caught between a thief named John Dortmunder and his most improbable plans.

It's a long way from the island of Manhattan to the island resort where Preston Fareweather has his hedonistic hideout-avoiding the legal prosecutions of five embittered ex-wives and enjoying the attentions of the prettiest gold diggers who happen to come his way. A terrible human being, Preston makes the terrible mistake of getting friendly with an equally dyspeptic personality: a New York fence named Arnie Albright.

Arnie went to the island paradise to become a happier man. It worked. After a week with Preston, Arnie comes home to New York with a whole new attitude and a proposition for his associate John Dortmunder: a can't miss, million-dollar robbery-of Preston's nearly unguarded, art-filled Fifth Avenue penthouse.

But when Dortmunder and his clean-up crew get together to plan the heist, they quickly get distracted and suddenly a billionaire from Fifth Avenue and a would-be Tony Soprano from New Jersey have one thing in common: John Dortmunder is after them both at the same time...and disaster can't be far behind.