Killer Instinct

Ted Bundy and Gary Ridgeway... Washington State is home to some of America's most notorious serial killers. Now Mark finds himself on the trail of another Washington madman. Eighteen people are dead on both sides of the State. Communities live in fear and want justice, and soon Mark is enmeshed in one of his deadliest cases.

Mommy Dearest meets Psycho. In a small town in the Pacific Northwest, a mother and her son are out for deadly revenge. They cover their tracks to fool detectives. But Mark isn't fooled. He works with local investigators to expose their deadly plot in court.

In a twisted game of cat-and-mouse, Mark matches wits with a smart and confident wife killer. In order to crack the case (with no body, no crime scene and no murder weapon) Mark must help convince a murderous mastermind to confess.

Two young men vanish from a New Hampshire farm. The last person to see them alive is an eccentric and beguiling local woman who was dating both men. Little do police suspect that she lured these men and possibly others to her farm.

A teenage girl is found shot to death along the banks of the Sacramento River. Detectives think they know who killed her. They have an eyewitness.But as Mark will soon discover, the truth isn't always as it appears.To solve this crime, Mark will have to dig below the surface.

A wealthy California family is found executed in their home. Detectives zero in on a bizarre murder plot involving the surviving son. As Mark discovers, it takes both hard-nosed detective work and cunning to bring the killer to justice.