Von Janowski spent the next year as a double agent, codenamed "WATCHDOG" by the Allies and "Bobbi" by the Abwehr, sending false messages to Germany under the joint control of the RCMP and MI5, with spymaster Cyril Mills having been seconded to Canada to assist in the double cross initiative. The effectiveness and honesty of his "turn" is a matter of some dispute. For example, John Cecil Masterman wrote in "The Double Cross System": "In November, WATCHDOG was landed from a U-boat in Canada together with a wireless set and an extensive questionnaire. This move on the part of the Germans threatened an extension of our activities to other parts of the world, but in fact the case did not develop very satisfactorily... WATCHDOG was closed down in the summer 1943."