In his third Baretta appearance, Burt Young is cast as Johnny Chekko, the longtime best friend of undercover cop Tony Baretta (Robert Blake). Unfortunately, Chekko has taken a different path in life, and is now employed as a professional hit man. Thus it is that Baretta enters into a deadly game of cat-and-mouse with his former friend to prevent a high-profile assassination. ~ Hal Erickson, Rovi