In late 1985, Isaac's former girlfriend moved away from Prince George. Since she no longer felt threatened, she confessed to what happened to the police, and Isaac was arrested on February 7, 1986. Initially, he was only charged with Joseph's killing, which he pleaded guilty to the same year. In August 1986, he was charged with Fuchscbichler's killing. The following year, he pleaded guilty to manslaughter after a psychiatrist found him fit to stand trial. He was subsequently charged with Kovacs' murder. At a preliminary hearing, witnesses testified that Isaac told them that he and his brother, Jim, took Kovacs to a secluded road, where they raped her, shot her, and mutilated her. Jim could not be charged in Kovacs' murder because he had been murdered a few years prior. Isaac pleaded guilty to second degree murder in relation to Kovacs' death. Ultimately, he was sentenced to three life terms with the possibility of parole after 15 years. As of 1989, he is imprisoned at the Kent Maximum Security Prison.
