Frank Merrifield, a male from Clinton, Missouri, was spending a winter day at home when three fugitives on the run drifted into his life. The visitors were Robert Wesley Knighton, Lawrence Lingle Brittain, and Ruth Renee Williams, traveling together after stealing a van and leaving Kansas City behind. At Merrifield’s house, the mood looked deceptively ordinary at first: Merrifield was drinking with his friend Ray Donahue, and conversation turned to firearms—enough to make the strangers seem like guests rather than predators.
According to later court accounts, Merrifield showed off his gun collection and, in a moment that would become the hinge of the entire case, invited Knighton to test-fire a pearl-handled. 22 caliber pistol. Knighton raised the gun and fired—not into a safe target, but into the back of Donahue’s head. Before Merrifield could fully register what had happened beside him, Knighton shot and killed him too. The trio then stripped the scene for what it could give them, taking cash and weapons, including the. 22 used in the killings and another handgun that would be used again as the spree continued.
What happened in Clinton was not a burst of isolated violence; it was one stop in a planned flight that had already crossed the line into “robberies and maybe even murders,” as testimony later described the group’s intentions. After the Clinton killings, the three pushed onward through Oklahoma, looking for another vehicle and, chillingly, scouting isolated homes to “take over”—a phrase explained in court as meaning they would kill the occupants and take what they wanted. In the narrative that emerged at trial, Merrifield’s death was tied to the same chain of decisions that drove the group across state lines and into more bloodshed.
The run ended in Canadian, Texas, after the group’s behavior drew the attention of a local resident who reported a suspicious vehicle circling slowly while its occupants appeared to be watching homes. A deputy located the truck, noticed it leaving town quickly, and conducted a stop that escalated when Knighton gave inconsistent information and two pistols were seen inside. Knighton was arrested as a result of that traffic stop, and the case against him built outward from there, connecting the guns, the travel route, and the widening set of crimes attributed to the trio.
In the courtroom aftermath, Knighton faced prosecution for the Oklahoma murders of Richard and Virginia Denny, with the Clinton killings of Merrifield and Donahue repeatedly surfacing in the legal record as part of the broader pattern of violence and as evidence used to argue he remained a continuing threat. The Oklahoma Court of Criminal Appeals ultimately affirmed the judgment and sentence in the case, and Knighton was executed by lethal injection on May 27, 2003. Brittain and Williams, meanwhile, pleaded guilty and cooperated with prosecutors in exchange for leniency; reporting and case summaries from the period describe Brittain receiving life imprisonment and Williams receiving two 15-year sentences for accessory-after-the-fact counts tied to the murders.
