Prizzi's Honor — Richard Condon

A darkly funny novel of mobsters, murder, and marriage: “The surprise ending will knock your reading glasses off.” -- The New York Times
 
Charley Partanna works as a hitman for the Prizzis, New York's most dangerous crime family. When he meets Irene Walker, an LA-based tax consultant, it's pretty much love at first sight.
 
But Irene also moonlights as a hit woman -- and had a hand in a big-money heist in Vegas. Now Charley has been told that she's got to go. Faced with divided loyalties, he must make a choice -- between the only family he's ever known and the woman he loves.
 
A New York Times Notable Book and made into an award-winning film, Prizzi's Honor is a dark, rollicking read from an “old pro at mixing satire with suspense” (The New York Times).