True tales of serial killers who went viral.

Serial killers have been with us for decades. The internet has put them in our pockets.

The Dnepropetrovsk Maniacs: A pair of teens go on a murderous spree, filming themselves along the way. When their deadly rampage is finished, more than twenty are dead and their exploits are immortalized in the most shocking video ever to circulate the internet, "3 Guys, 1 Hammer."

Pedro Rodrigues Filho, a.k.a. "Killer Petey": A serial killer with over 100 kills to his name prides himself on killing only murderers, rapists, and pedophiles. When he walks free, he becomes a Youtube sensation.

Mark Twitchell, a.k.a. the "Dexter" Serial Killer: A psychopath lures victims through online dating to use as "research" for his twisted film project.

Psycho.com is a chilling look at what happens when murderous minds meet modern technology.

Contains mature themes.