In February 2004, Carlie Brucia was kidnapped from a Florida carwash a mile from her house — and found dead just a few days later in a field behind a church.

Philip Chism was just 14 when he murdered his 24-year-old math teacher Colleen Ritzer at Danvers High School before dumping her corpse behind the school.

In 2010, 17-year-old Mackenzie Cowell fell victim to a disturbed classmate named Christopher Scott Wilson who had a morbid fascination with murder and a tattoo of Hannibal Lecter on his arm.

A popular 15-year-old cheerleader from Morgan Hill, California, Sierra LaMar was kidnapped and killed in 2012 — and her body has never been found.

Bernie Tiede was a beloved mortician in Carthage, Texas, and even after he shot his 81-year-old companion Marjorie Nugent dead in 1996, his town still stuck by his side.

After Caylee Anthony's disappearance and death in 2008, Casey Anthony became the prime suspect in one of the most infamous murder cases in recent history.

Brandon Swanson was on his way home for spring break in May 2008 when he got into a minor car accident and called his parents for help. Then, he suddenly vanished without a trace.

On December 28, 1992, nine-year-old Katie Beers was captured by family friend John Esposito — then held prisoner and abused for weeks.

Starting in 2008, Marc O'Leary stalked and raped at least six women in Colorado and Washington — and police refused to believe his first victim.

A train-hopping serial killer, Ángel Maturino Reséndiz murdered up to 23 innocent people in Mexico and the United States in the late 1980s and '90s.