On a cold January day in 1990, Richard Denney, 62, and his wife Virginia, 64, were shot and killed at their farmhouse near Tonkawa, Oklahoma. The killings were part of a multi-state crime spree that began in Clinton, Missouri, where the same group murdered two men, Frankie T. Merrifield and his stepson Roy E. Donahue, after drinking together.

Their van ran low on gas and they stopped at the Denney driveway. When Richard Denney came out, Knighton forced him back inside at gunpoint, shot Richard in the chest and then shot Virginia. The motive stated was robbery; the group left with about $61 and a beat-up pickup truck.

Convictions followed: Knighton was later convicted for the Denney murders and the Missouri killings, Brittain received life terms for two counts of murder, and Williams was convicted as an accessory after the fact and given 15-year sentences on each count. If anyone knew the Denneys or has information about that night, please share what you remember.