First trial On October 20, 1988, he abducted 21-year-old college student Wendy Gant in a parking lot of
Olsen Field at
Texas A&M University, using her car to drive them to an isolated rural area near
College Station, where he bound, raped, beat, and stabbed Gant several times. Corwin then tied her upright to a tree and slit her throat. Gant managed to free herself and hid until Corwin left, later being found in a parking lot by a county employee and taken to hospital. Shortly after his arrest, authorities announced that he was a suspect in the three murders, but that they had not yet gathered enough evidence to charge him. Police subsequently found a fingerprint from Corwin on the driver's side door of Gant's vehicle. In 1989, he pleaded guilty to attempted capital murder in the case and was sentenced to 99 years in prison. In the course of the following two months, Corwin additionally admitted to killing Martin as well, but claimed that it was unintentional. Despite his admissions, he was indicted on 3 counts of capital murder under the state's serial murder clause. Corwin's second trial began in March 1990 in Montgomery County, under the agreement that it would prosecute him for the murders in the two other counties as well. During the trial, the prosecutor presented circumstantial evidence from three laboratory technicians with the
Texas Department of Public Safety that three hairs found in Corwin's pickup truck were consistent with hairs from Ewing and Risinger, while a fourth indicated that one other hair also linked him to the Martin murder. In addition, multiple witnesses indicated unusual occurrences surrounding the dates of the murders, such as one employer of Corwin noticing that he had a strange cut on his finger; when asked, Corwin claimed that he had cut himself while attempting to open a jar. Prison psychologist Lou Davis testified that Corwin was initially hesitant to talk about the crime out of fear of being labeled a "serial killer", but eventually opened up about the crimes, claiming that he felt guilty and wanted to tell somebody. On March 17, 1990, Corwin was convicted of the capital murders of Martin and Risinger, making him the first person to be convicted under Texas' serial killer statute. His lawyer objected to the conviction, claiming that he denied access to an attorney despite asking for one on at least two occasions. Four days later, after less than 35 minutes of deliberation, the jury recommended that Corwin be sentenced to death. ==Imprisonment and execution==