It was nearly 34 years ago on the night of Dec. 6, 1991, when Jennifer Harbison, 17, her sister Sarah Harbison, 15, Eliza ...

In December 1991, four teen girls were murdered at a yogurt shop in North Austin. An HBO docuseries taking a closer look at ...

ABC News sat down with Idaho State Police Lt. Darren Gilbertson, the lead detective in the Idaho murders case, after Bryan ...