Who played Garth Zendt in episode 202 of Diagnosis Murder?

In episode 202 of "Diagnosis Murder," titled "The House That Lurks," the character Garth Zendt was portrayed by actor John O'Hurley. He is well-known for his role as J. Peterman on the television series "Seinfeld." The episode originally aired in 1994 and features a mix of mystery and drama, typical of the show's format.