 He later pleaded no contest to charges that he raped and murdered a professor and provost of the University of Michigan-Flint, Margarette Eby, on November 9, 1986.The two rapes and murders were proved to be the work of one person by matching semen samples taken from the two crime scenes.Gorton had left a latent fingerprint at the Eby crime scene; when it was matched to him, the Michigan State Police learned the killer's identity.