The Frank Quinn Omnibus (Books 1 - 4). Darker Than Night, In for the Kill, Night Kills, Urge to Kill

Darker then Night To catch a killer... or die tryingA murderer dubbed 'The Night Prowler' has turned the city that doesn't sleep into a town kept awake by terror. Unseen, he enters couples' home. Unsuspected, he lingers until the perfect moment arrives. And then he leaves 'gifts' for his victims - before taking their lives. Ex-homicide cop Frank Quinn is still reeling in the wake of an elaborate set-up that ended his career.
For Quinn, tracking this killer isn't just any job - it's a last chance to salvage his reputation. And with the body count rising, it's up to Quinn to unlock the mystery of a madman's past and end his bloody reign. In for the Kill An invitation written in blood... A madman is stalking women in the city. By the time his victims are found, they've been dismembered with careful precision, their limbs stacked into a gruesome pyramid and completely cleansed of every last drop of blood.
Accustomed to working on the most grisly homicides, detective Frank Quinn's nerves don't rattle easily but with this killer the veteran cop feels a chill run down his spine. This time, he realises, he is up against a psychopath who will test him like never before... Praise for John Lutz:'Lutz offers up a heart pounding roller coaster of a ride.' Jeffrey Deaver.'Misleading clues and dramatic suspense will keep readers pondering the intricacies of this twisted, creepy whodunit long after the last page is turned' Publishers Weekly, starred review.
Night Kills ON THE TRAIL OF A BLOODY KILLER... Frank Quinn is sure he is hunting for a madman: someone who is shooting young women in the heart, defiling their bodies, leaving only the torsos to be found. Quinn, a former NYPD detective, is called into the case by an ambitious chief of police and mobilizes his team of brilliant law-enforcement misfits. But in the concrete canyons of New York, this shocking serial murder case is turning into something very different.