An autopsy shows that a single mother of two girls died of blunt force trauma before she was placed in her vehicle and set on fire. The killer tells police he was only trying to save his dog's life, but his bizarre tale quickly falls apart and investigators realize they're dealing with cold-blooded murder.

Watch "Signs of a Psychopath" on discovery+ ➡️ https://www.discoveryplus.com/show/signs-of-a-psychopath