Explore some of the major theories surrounding the more than 60-year-old unsolved case of a dead boy found in a box in Philadelphia, Pennsylvania on February 25, 1957.

From the arrest of a suspect in the Golden State Killer case to a serial killer's confession to the murder of 90 women, 2018 has been a breakthrough year for cold cases.

In November 2018, serial killer Samuel Little, 78, confessed to murdering 90 women. While the number may be astonishing, the duration of Little's homicidal behavior, and the ages at which he committed his crimes, are also noteworthy.

Shortly after Chris Watts was sentenced to three life sentences without the possibility of parole for the murder of his wife and two daughters, prosecutors released a 2,000-page document known as the discovery (i.e. their evidence against Watts). The file contained a massive trove of surveillance photos, FBI interviews, text messages, police interviews with friends and family and more. We examine some of the discovery's details.

A&E True Crime checks in on what Casey Anthony has been up to in the 10 years, her relationship with her parents and friends, her legal status and other lingering questions about her controversial murder trial.

A&E True Crime explores how Aaron Hernandez went from gridiron star to convicted murderer—and how his life is teaching researchers about the brain.

Convicted serial killer Samuel Little recently confessed to 90 more murders. If all of his killings are confirmed, Little, currently age 78, would be the most prolific serial killer in American history. Learn more about Little and his confession.

A&E True Crime profiles three family-related murders that took place on Thanksgiving.

The circumstances around the cult leader's death is still a mystery decades later. Was his gunshot self-inflicted? Or did someone kill him?

A&E True Crime looks into the life of Joaquin Guzman and why murders by Mexican drug cartels are particularly gruesome.