Marlyn Mason guest stars as Lily Frankel, a sexy German nightclub chanteuse who doubles as an Allied agent. Lily informs Hogan that one of the Underground members is actually a double agent who intends to turn over a list of Allied operatives to the Germans. To prevent this, Hogan cooks up a scheme that requires Col. Klink and Gestapo officer Hochstetter to take dancing lessons from LeBeau (it makes sense in context!). Written by Arthur Julian, "Six Lessons From Madame LaGrange" first aired on February 27, 1970. ~ Hal Erickson, Rovi