CopyCat Killers - Season 3

The story of Kim Edwards and Lucas Markham, aka the "Twilight Killers," who make headlines as Britain's youngest double murderers.

One fan, James Cushing, finds an axe, he thinks it is destiny to follow Elizabeth Montgomery's portrayal and become Lizzie. Walking the streets of a Seattle suburb at night, no one is safe as he searches for the perfect victim.

An attempt to rob a Brooklyn token clerk's booth leaves a man dead.

The film, Casino, takes us back to a time when Las Vegas was still the "wild west" and the mob ran everything. Living near sin city, Matt Baker watches the movie over and over again, trying to mimic the gangsters.

Two middle school girls, Morgan Geyser and Anissa Weier, decide to sacrifice their friend Payton Leutner for the infamous online horror villain Slender Man. After reading stories about Slender Man, the two 12-year-old girls attempt to murder their classmate, but they soon discover that committing a cold-blooded murder is much easier said than done.

Few serial killers are more infamous than Jeffrey Dahmer; few people know that Dahmer had a bizarre obsession with "The Exorcist III."

At a young age, Michael Hernandez develops a dark obsession with serial killers—specifically, Hannibal Lecter and Buffalo Bill from Silence of the Lambs. In an attempt to mirror these horror villains, Hernandez decides to start his very own killing spree. He lures classmates Jamie Gough and Andre Martin into his school bathroom, and only one of them lives to tell the tale.

In an attempt to become just like his favorite fictitious criminals, New Jersey man Joe Post joins the "Pit Bulls," a small gang of local drug addicts who terrorize the neighborhood. While the Pit Bulls' crimes start off small, when Joe becomes convinced fellow gang member Andrew may have ratted them out to the authorities, Joe takes no mercy in a brutal Goodfellas–inspired copycat crime.

Inspired by an episode of Forensic Files, disgraced businessman Ari Squire attempts to start a new life by faking his own death. To collect his $5 million life insurance policy, Squire plans to murder an innocent man named Justin Newman and take on his identity. Little does Ari know, his plan is far from airtight, and Newman is not the only one who will end up dead.

Cousins Tony Bagnato and Diego Carbone join a fight club, but Tony soon turns into a wannabe crime boss who decides one member needs to pay the ultimate price.

A look at real-life murder cases inspired by those in film and television with interviews of family members and investigators.

In London, England, a drug addict mimics one of the most gruesome torture scenes in the "Saw" horror movie franchise to murder his roommate.

In Moscow, a woman obsessed with the horror film "Bride of Chucky" goes on a stabbing rampage with a gang of male accomplices, leading to the deaths of 15 people.

Brittany, a teenager with an alcohol and drug problem, binge watches American Horror Story and in an act of desperation, she murdered her grandfather.

After watching the cult classic, a couple were inspired to mimic the actions in the movie in their fight for love; a look at what made these killers commit such an atrocious crime.

Luka Magnotta confesses to a grotesque murder online, setting off an international manhunt; after Magnotta is found and brought to trial, prosecutors reveal that he was inspired by the erotic thriller "Basic Instinct."

Less than 30 days after the famous movie aired, a crime mirroring the film occurred; a look at who the sociopath was and was he inspired by the cult classic.

In London, England, a drug addict mimics one of the most gruesome torture scenes in the "Saw" horror movie franchise to murder his roommate.