Private detective Fritsch from Munich had received a lucrative assignment: he was to obtain proof of inheritance for a Mr. Seligmann from Canada; this would bring the client a sum of five million dollars. He is therefore looking for an old document that was hidden in a valuable painting that disappeared decades ago. The starting point is a trail that leads to a town in Poland. The painting in question is said to have disappeared there in the final years of the Second World War. But the object of...