Helga and Von Smallhausen rescue Herr Flick from prison where he is being held (disguised as stenographer Irma Von Kinkenrotten ) by General Von Klinkerhoffen. Rene is forced to assist - who else, after all, can masquerade as Heinrich Himmler, head of the Gestapo?

Rene's photograph of the safe in Gruber's bedroom (containing the plans for the German invasion of England) is identified by Leclerc as a Kaisenhoff Rosenbaum Swartzburger 16-Lever Multi-Counter Mark Three. Leclerc and Rene are to blow the safe; Edith is to create a diversion by dropping a smoke cannister down Gruber's chimney. Now, was it the third or the fourth chimney counting from the west?