 News of the couple's fate, which had previously been the subject of press speculation, was soon overshadowed by events following the Japanese invasion of the Chinese administered areas of the city of Shanghai on 28 January 1932, following the Mukden Incident.For almost 60 years, the identity of Noulens was incorrectly thought to be Paul Ruegg.Thus, in the few works that deal with the arrest of Rudnik and his wife on 15 June 1931, this mistake is common.