The attacks happened on weekends between February 22, 1946, and May 3, 1946. The first two victims, Jimmy Hollis and Mary Larey, survived. The first double-murder, which involved Richard Griffin and Polly Ann Moore, happened four weeks later. The second double-homicide, involving Paul Martin and Betty Jo Booker, occurred exactly three weeks after the first murders. Finally, almost exactly three weeks later, Virgil Starks was killed and his wife, Katie, was severely wounded. The Texas Rangers came in to investigate, including M. T. "Lone Wolf" Gonzaullas.