Since 1965, there’s been an unsolved murder in Houston, Texas. The main suspect, Charles Rogers, managed to disappear and police were never able to find him. The case is still considered open. In 1997, a couple of forensic accountants named Hugh and Martha Gardenier decided to look into the murders, and were able to uncover evidence that the police missed. And now they think they’ve solved the mystery.

Learn more about Hugh and Martha’s book, The Ice Box Murders.