Klaus Neumann is possibly a relative of both Robert Kohler and the millionaire. Therefore, the two of them are possible candidates for the inheritance. However, the grandmother’s letter was sent before the millionaire’s accident. Furthermore, the article about the accident was in the newspaper on September 2, and the newspaper was delivered to the polar station the same day the Anduran was stolen. Although Maria met Klaus potentially directly after the murder and he could be a suspect, Klaus knew nothing about a possible inheritance and had no motive.