In a variation on the third-season episode "Axis Annie," guest star Antoinette Bower is cast as Nazi radio propagandist Berlin Betty. At first, Hogan's men balk at Betty's invitation to appear on her radio program and deliver speeches imploring the Allies to surrender. But Hogan surprisingly accepts the offer -- intending to transmit coded messages to the Underground. Written by Arthur Julian, "Is There a Traitor in the House?" first aired on December 19, 1969. ~ Hal Erickson, Rovi