The Texarkana Moonlight Murders was a term created for the unsolved murders committed in and around Texarkana in the spring of 1946 by an unidentified serial killer known as the "Phantom Killer". The killer attacked eight people within ten weeks, five of whom were killed with the attacks occurring late at night, hence the name "Moonlight Murders." The murders sent the town of Texarkana into a state of panic throughout the summer as people sought to arm themselves and kept indoors at night.