Despite admitting to Siegfried Kircheis his awareness of Christoph von Basel's role as the leader of a thyoxin trafficking organisation, Michael von Keyserling refuses to testify against him. Kircheis then visits Johanna von Basel, who reveals that she was already aware of her husband's wrongdoings and was in fact the mysterious informant who tipped the police of Kreuznach III about the imminent arrival of the leader of the thyoxin trafficking organisation. However, she does not plan to testify against him either and was actually hoping her husband to apologise to Keyserling for all his wrongdoings, which backfired when the former tried to silence the latter instead in the previous day. Feeling desperate at the lack of progress, Superintendent Hoffmann asks Kircheis to confront Christoph von Basel directly...