The Killer Speaks - Season 1

When 23-year-old Levi King executed two innocent neighbors in 2005 he finally found a release for his life-long inner rage. For the first time in his life, King felt a sense of peace. But when that feeling began to fade, he broke into a farmhouse where a family was asleep, looking to kill again. Now, for the first time, King reveals what really happened in the house and how a 10-year-old girl survived the bloodbath that followed.

In 2011 Maksim Gelman went on a brutal killing spree in New York City that left four people dead and four wounded. It began when he killed his stepfather by stabbing him 55 times, and ended 28 hours later in a bloody confrontation with the NYPD.

Robert Lopez warned women he loved never to betray him. In 2005, after serving 10 years for stabbing and nearly killing his first girlfriend, Lopez had a new girlfriend. But when she gave Lopez reason to doubt her affection, he exacted fatal revenge. Dr. Sasha Bardey identifies Lopez as a push-button killer--one who has a specific set of emotional buttons, that when pushed, unleash a murderous rage. From behind bars, in a first-time ever interview, Lopez reveals the source of the horrifying rage that left 21-year-old Brandi Bernard dead.

In 2006, when 38-year-old Dena Riley met convicted rapist Richard Davis, their relationship turned out to be a marriage made in hell. They shared the same twisted desire for three-way sex--followed by murder. Riley reveals how they acted out their sadistic fantasies--raping, torturing and killing two innocent women that was recorded on tape to be savored later. Police eventually caught up with Riley and Davis--but not before the deadly couple targeted one last, helpless victim.

Two weeks before Christmas, Earl Forrest burst into a friend's house and gunned down two people in cold blood. Still thirsty for mayhem, Forrest then ambushed the deputies who came knocking, leaving four more people shot. What triggered this orgy of violence? Now on death row, Forrest reveals the surprising reason behind the killing spree.