Three haunting cases from The First 48 archive that stuck with investigators long after the arrest. In Memphis, a woman is dragged to her death in broad daylight, then, in Harris County, a young mother is found with her throat slashed, and finally, in Miami, an ongoing battle between two gangs feels impossible to curtail as the body count rises.

Three cases from The First 48 with puzzling motives. In Tulsa, a woman is brutally attacked as payback for someone else, then, in Dallas, a barber is gunned down by someone who greets him as a friend. And finally, in Atlanta, a man sticks up for a friend and becomes the target.