BOISE, Idaho (CBS2) — Serial Killer Thomas Creech has been connected to a 1974 cold case murder in San Bernardino County. According to San Bernardino Police, The incident happened on Oct. 1, 1974. Daniel Walker was parked along I-40, sleeping in his van with a passenger. An unknown suspect opened fire on Walker and his passenger, though the passenger was able to escape and flag down a passing motorist for help. Walker died later in the hospital.