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.

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.

On May 23, 2009, Amanda Stott-Smith dropped two of her young children off the Sellwood Bridge in Portland, Oregon. One of them died. Read an excerpt from the book, 'To the Bridge: A True Story of Motherhood and Murder,' by Nancy Rommelmann, to learn about the immediate aftermath of Stott-Smith's horrific crime.

In 1937, three young girls were sexually assaulted and strangled after playing at an Inglewood, California park. A suspect was caught, convicted and sentenced to death. Pamela Everett, a journalist, lawyer and niece of two of the girls, explores the tragedy and investigates whether the wrong man was convicted of the murders.

David Finkelhor, director of the Crimes Against Children Research Center and author of the book 'Nursery Crimes,' on why some babysitters kill and how parents can prevent their children from falling victim.

Women have been murdering their children since the beginning of time. But what would drive someone to end a life they brought into the world?

Isabel Martinez recently shocked the world by allegedly stabbing to death her husband and four of her five children (she's been charged with multiple accounts of murder and aggregated assault). Although she has yet to be convicted of any crime, we are reminded of famous cases of mothers convicted of killing their children.