The United States may have churned out the highest number of serial killers in the world over the years, but it certainly doesn't hold exclusive rights on brutal murders. Learn about some international serial killers and how their respective countries handled their crimes.

Sgt. Sean "Sticks" Larkin from Live PD and Live PD Presents: PD Cam talks about the funniest things he's seen caught on camera, whether civilians can request footage from private businesses and the use of surveillance by the Tulsa police.

'Dirty John,' real name: John Meehan, was a criminal, con artist and master manipulator known for preying upon women in various states who he considered easy targets. A&E True Crime dives into the backstory of the infamous lothario known as Dirty John.

Watch clips of the various police dogs featured on Live PD working alongside their human partners.

Nicknamed 'The Dating Game Killer' after his 1978 appearance on the TV show of the same name while in the middle of a killing spree, Rodney Alcala died on July 24, 2021. Although convicted of seven murders, investigators speculate there are more victims.

A&E True Crime looks back on Columbian drug lord Pablo Escobar's rise to power and prosperity, and investigates who fired the bullet that took his life.

True-crime author Michael Arntfield talks about homicide detective Pat Postiglione, who headed up Nashville's cold-case Murder Squad and solved dozens of unsolved murders, and how the country-music mecca became a murder hub.

After the 2005 disappearance of Teresa Halbach, 16-year-old Brendan Dassey confessed to police that he and his uncle, Steven Avery, raped and murdered her. But Dassey later recanted his confession, suggesting that he'd been coerced into telling the police what they wanted to hear. The jury didn't buy it and sentenced him to life in prison.

Doctors who murder are a rare breed, but perhaps because their entire mission is to do no harm, they are among the most chilling kind of killers. Texas surgeon Dr. Christopher Duntsch is one such physician who violated his oath so profoundly by intentionally botching surgeries that he became known as 'Dr. Death.'

Researchers have found the vast majority of people who kill their families (familicide), are men with a history of violence toward their spouse and children. But what tips the scale from abuse to murder? And which men are most likely to kill? We spoke to a professor of forensic psychology for answers.