Thirty years after it was first pioneered, the Brain Fingerprinting system is finally being put to the test.

How Cops became the most polarizing reality TV show in America.

Eight of serial killer John Wayne Gacy’s victims remained a mystery, 35 years after his conviction. One man made it his mission to identify them.

The author of I Know What You Did Last Summer investigates her own daughter’s unsolved murder.

An exploited celebrity’s long journey home.