It’s been 25 years since the French producer's murder in West Cork, which shocked the normally crime-free region of Ireland. But the unsolved crime continues to make headlines due to controversy around the case’s main suspect, English journalist Ian Bailey.

One expert says priests in Mexico are targeted because they work in direct opposition to the interests of organized crime, which in many instances has infiltrated or overrun law enforcement throughout the country.

In the decade since FLDS leader Warren Jeffs was sentenced to life in prison for sexually abusing underage girls he married, evidence suggests he maintains a grip on a diminished, but devout group of followers.

In criminal investigations, bones can help identify human remains and often reveal how a person died. Sue Black, a renowned forensic anthropologist, gives us insights into the stories bones tell.

Learn about the early years of one of America's most infamous serial killers, Gary Ridgway, who was convicted of murdering 49 people.

What did the killer do in the days before being executed for the murder of 168 people? What was his last meal, last words and last activities?

The Night Stalker, sentenced to death in 1989 for 13 murders, escaped execution when he died of natural causes in 2013.

Albert DeSalvo, believed to be the serial killer responsible for the deaths of 13 women in the Boston area in the early '60s, told of a childhood marked by extreme violence and cruelty.

In the spring of 1999, the 22-year-old targeted London's Black, Bangladeshi and gay communities with homemade explosives. Where is he today?

Some of the most infamous criminals in history experienced murders first-hand before they starting doing the killing themselves.