 Vauck, however answered the phone and when he requested the name of the caller to take a message, and was met with "Schulze-Boysen", who was already identified as "CORO", the deception was revealed.On 31 August 1942, Schulze-Boysen was arrested in his office in the RLM, and his wife Libertas a few days later, when he did not return home in the evening, she panicked and fled to a friends house.On 15 December, Harro and Libertas, along with many close friends including the Harnacks, the Schumacher's, Hans Coppi, John Graudenz and Horst Heilmann, were tried in the Reichskriegsgericht, the highest military court in Nazi Germany.