 In 1989, Zain became chief of physical evidence at the Bexar County medical examiner's office.However, West Virginia prosecutors continued to call upon him because his results appeared to be more favorable than others.In 1987, Glen Woodall was convicted of a series of grisly felonies at Huntington Mall, including two cases of sexual assault, principally on Zain's testimony regarding semen from one of the victims.