Signs of a Psychopath, I Knew She Lived Alone

A sadistic 'Tourniquet Killer' terrorises young girls in Texas. He confesses to multiple murders and grants one final interview before his execution.

A mother claims not to know how her children died. An investigation reveals the tragedy isn't an accident but a carefully crafted killing by a vengeful psychopath.

A nurse confesses the horrors she routinely inflicted on numerous elderly patients in Canada.

A failed actor's killing spree becomes fodder for his police interrogation performance.

A Burlington Township, New Jersey, man kills his girlfriend, but he reveals she is not his first victim.

An Orlando, Florida, man fakes psychosis to avoid responsibility for killing his ex-girlfriend.

A 17-year-old takes a deadly road trip that exposes the inner psychopath lurking within.

A blazing car accident on a Michigan highway turns out to be the result of a devious murder plot.

A disturbed man goes on a frenzied rampage that leaves three women dead and sets off a state-wide manhunt.

A fractured relationship turns dark and deadly when one man seeks revenge on his ex-girlfriend's new love.