An examination of ancient remains from a cave in Spain turned into an episode of CSI: Middle Pleistocene when scientists found evidence of what they say is the first known murder. The skull found in the “Pit of Bones” site belongs to a young adult who lived around 430,000 years ago and bears what researchers say are unmistakable signs of deadly violence, reports Forbes, which notes that the scientists have assembled enough evidence to convince a modern jury that the early human was likely killed by a right-handed attacker who hit the victim in the head twice with some kind of object—and it wouldn’t take a prehistoric Columbo to deduce that the murder weapon was probably a rock.