Vito Scotti guest stars as peace-loving Italian officer Major Bonacelli, a role originated by Hans Conried in the first-season episode "The Pizza Parlor." Now working undercover for the Allies -- and for Hogan -- Bonacelli wants to chuck it all and escape to Switzerland. Hogan must persuade the Major to go on one final mission: photograph a top-secret German anti-aircraft base. Written by Arthur Julian, "The Return of Major Bonacelli" first aired on March 15, 1969. ~ Hal Erickson, Rovi