The Streets of San Francisco/Spooks for Sale
Special Guest Star: Charles Cioffi (Burt Dressler)
A break-in by a private detective agency to plant bugs in a clothing factory turns deadly, and Steve discovers that his old partner, Archie Kimbro, now works for the agency. The detectives are puzzled, though, as to just why someone would want to bug the factory.
Guest star Tom Selleck was one of the actors considered to replace Michael Douglas when he announced he was leaving the series. Selleck was also under consideration by QM Productions for a regular role on another series, Most Wanted, but he didn't get cast there either.