As Keith grew up, he started exhibiting violent behavior toward people. When Keith’s father bought him a BB gun, he shot two of his neighbors without provocation (via Radford University.) From there, Jesperson’s activities escalated to shoplifting and he even attempted to kill a boy who held his head underwater in a lake. In another instance, he reportedly violently beat up a boy.

At the age of 31, Jesperson married a woman named Rose. It was shortly after when he took a job as a long-haul truck driver and used that as an opportunity to lure his victims. A couple who falsely confessed to the murder of Jesperson’s first victim was arrested but Keith didn’t like the idea of anyone taking credit for his crimes. He confessed that he was the murderer on a bathroom wall and signed it with a happy face. Jesperson’s final victim was his fiancée, Julie Ann Winningham. She was the only victim that Jesperson knew, but just like the others, she was strangled to death, according to Murderpedia.

Keith Jesperson was sentenced to life imprisonment and is imprisoned at the Oregon State Penitentiary.