Charles Durning guest stars as Hatch, a veteran safecracker whom undercover cop Tony Baretta (Robert Blake) sent to prison. When a series of jewelry store robberies hits his district, Baretta realizes that there is only one man who can help him bring the perps to justice. Need it be added that the man in question is none other than the hapless Hatch? Former B-Western leading lady Peggy Stewart appears in a cameo role as a teacher. ~ Hal Erickson, Rovi