Gratz captures SOE agent David Mainwaring, codename 'Cadet', being landed on the coast - staging a dummy parachute drop to successfully distract the SS, but in doing so further antagonising them, as they suspect his actions. Gratz willingly gives the details of Cadet's capture to Nina, allowing her to pass it to the resistance and claim she has obtained it surreptitiously. Cadet is deliberately allowed to escape by Gratz, and hide in his flat, to be able to give details of his mission to Nina: Cadet wants Nina to then give a false message back to Gratz, but is unsure if he can rely on her.
—Anonymous