Katherine Horsford

The art of Ken Perenyi is remarkable, but it's extremely difficult to detect which pieces are his. Ken describes his 34-year career of forgery and explains how he tricked some of the world's most famous art experts along the way.

Former Secret Service Special Agent and Liason to the National Center for Missing and Exploited Children Jeffrey James explains how the federal government is activated when a missing persons case occurs.

In 1999, four women are found dead in Yosemite National Park. Former FBI Agent Jeffrey Rinek was the lead investigator on the case and shares details from the investigation, as well as how he was able to obtain a confession from the killer himself.

In part two of this story, former DEA Special Agents Javier Peña and Steve Murphy detail the capture and final moments of the notorious drug lord, Pablo Escobar.

Pablo Escobar was one of the world's richest and most dangerous men at the height of his drug smuggling career until two American DEA Special Agents joined the Colombian authorities to take him down.

Maura Murray has been missing for 19 years. Julie Murray, Maura's older sister, discusses the details of her sister's disappearance, her efforts to uncover more information, and the impact the case has had on her family.

On October 1st, 1993, 12-year-old Polly Klaas and two of her friends had planned a sleepover after school. It was a night filled with dancing, goofing off, and playing games, but it would soon take a turn for the worse.