Whack Jobs

Matt Ruff
(A)lmost everyone is a bad monkey of some kind, but only Jane Charlotte is a self-confessed member of "The Department for the Final Disposition of Irredeemable Persons." Or is she? (from Publishers Weekly)
Josh Bazell
Dr. Peter Brown is an intern at Manhattan's worst hospital..., Pietro "Bearclaw" Brnwna is a hitman for the mob...Eddy Squillante is Dr. Brown's new patient, with three months to live and a very strange idea: that Peter Brown and Pietro Brnwa might-just might-be the same person ... (from description)
Charlie Huston
It begins when Hank’s neighbor...has to leave town in a rush...But it isn’t until two Russians in tracksuits drag Hank over the bar at the joint where he works and beat him to a pulp that he starts to get the idea: Someone wants something from him. He just doesn’t know what it is, where it is, or how to make them understand he doesn’t have it. (from summary)
Jeff Lindsay
Meet Dexter Morgan, a polite wolf in sheep’s clothing. He’s handsome and charming, but...(h)e’s a serial killer whose one golden rule makes him immensely likeable: he only kills bad people. (from summary)
Tim Dorsey
(L)ots of people are after a suitcase full of money that got dropped in the wrong car: two bad guys, one obsessed with Florida history...and another with cocaine; one lady, who’s also a killer; and the good-guy lawyer. (from Library Journal)
Lawrence Block
Keller...suffers from loneliness, deeply conflicted memories of childhood, and an inchoate longing for things he can't even identify...He falls into and out of a series of doomed relationships. He adopts a dog and dotes on it, neurotically. He tries psychotherapy. Keller is a modern urban Everyman – except that he makes his living as a contract killer. (from BookList)
Ken Bruen
(A) psychotic Irish cop, Matthew Patrick O'Shea...blackmails his way into a green card and a police exchange program that takes him from Galway to New York City for a one-year stint with the NYPD. (from Publishers Weekly)
Patrick Suskind
(A) terrifying examination of what happens when one man's indulgence in his greatest passion—his sense of smell—leads to murder. (from summary)
Bill Fitzhugh
Bob Dillon starts his own business using his environmentally friendly technique: hybrid killer insects that eat cockroaches...Marcel, a broker who contracts for assassins, is looking for a reliable newcomer to complete a million-dollar hit. He advertises and Bob responds, neither understanding the nature of the other's "exterminating" business. (from Library Journal)
Andy Tilley
After a bungled...suicide attempt and a subsequent hospital stay, Jimmy's life is set on a course he could never have imagined with his new best pal, fellow resident and practical joker Kevin. Together the two form a business to assist the suicidal who, like Jimmy, couldn't quite pull off dying the first time. (from summary)
Hiaasen
When Nick Stranahan...murders a would-be assailant by skewering him with the razor-sharp bill of a stuffed marlin, he sets off a roller coaster ride of events that will drop-kick him into the deep slime of Miami's prosperous and sleazy plastic surgery industry. (from summary)
Jane Shapiro
He is perfect for her - charming and sexy and awkward and sweet. They are forty; it is time for them to marry and shelter each other. When the honeymoon ends, as honeymoons always do, real life begins, with its surprises. (from summary)
Don Winslow
Nobody has actually seen the legendary Laguna Beach surfer-turned-drug dealer Bobby Zacharias for years, so a nasty federal agent thinks he has a chance of passing off a lookalike in a hostage switch with a Mexican drug lord. Bobby Z's double, a career screw-up named Tim Kearney, takes the deal because it means a chance to get out of prison--where the Hell's Angels want to terminate him. (from Amazon.com)
David Liss
Lem Altick, a 17-year-old door-to-door encyclopedia salesman, witnesses the murder of two potential customers in a mobile home. Fearing he'll be fingered for the crime – or worse, that he's next – Lem establishes a wary relationship with the likable killer. (from Publishers Weekly)
Hugh Laurie
Thomas Lang...is unemployed and drifting. The only commodity he has to sell is himself. But when he is offered a contract to murder a wealthy businessman he politely declines..And in no time...(he) finds himself caught up in international intrigue, spying, violence, murder...and love. (from summary)
Daniel Silva
Art restorer Gabriel Allon, whose family was killed by Palestinian assassin, Tariq al-Hourani, is brought back to the Israeli spy network by master spy Ari Shamron, in order to thwart Tariq, who is devising a plan to kill Israel's Prime Minister. (from eSequels)
Jim Thompson
The worst thing most people can say against (Sheriff Lou Ford) is that he's a little slow and a little boring. But, then, most people don't know about the sickness – the sickness that almost got Lou put away when he was younger. The sickness that is about to surface again. (from summary)
Patricia Highsmith
(A)n unforgettable introduction to this debonair confidence man, whose talent for self-invention and calculated murder is chronicled in four subsequent novels. (from description)