Imagine investigating a case where each of the several victims had type O blood, drove an obsolete car, and hummed a nursery rhyme before committing murder and then suicide. That's young criminal psychologist Kit Franklyn's assignment and the solution just seems plain impossible. Her obese, jovial boss, chief medical examiner Andy Broussard, is just as baffled as she is. Together they devise strictly scientific possibilities.

It was a hell of a long shot.... CIA assassin Fortune Redding is about to undertake her most difficult mission ever - in Sinful, Louisiana. With a leak at the CIA and a price placed on her head by one of the world's largest arms dealers, Fortune has to go off-grid, but she never expected to be this far out of her element.

Mardi Gras has secrets. Like why would Felix's brother, a well-off and successful doctor, let the midnight train roll over him? Especially just as his new Carnival Krewe prepares for their inaugural parade? Felix has had an easy life, coasting by as the black sheep of a wealthy family. He spends his time under the green canopies of Uptown New Orleans, whiling away his days in leisure and mediocrity.

Still reeling from a personal tragedy, investigative journalist Rooker Lindström finds a grim hideaway from the world. It’s the dilapidated cabin on Minnesota’s Deer Lake bequeathed to him by his late father—one of the most notorious serial killers in the state. If the walls of this murder house could talk, they’d scream. Detective Tess Harlow needs something from Rooker only he can provide: a window into the mind of a murderer. A copycat is on the prowl, following in the footsteps of Rooker’s father.

0n a hot summer day at Bellwhether High School in Sydney, Australia, teacher Bill Pagett lies murdered, the hole in his head accomplished with neat efficiency by a Black & Decker drill. Detective Inspector Carol Ashton investigates, bringing with her a formidable reputation for competence. She soon uncovers tangled relationships and motives for murder among the six teaching staff, along with a maze of malicious anonymous letters and threatening phone calls. And then there is yet another corpse.