Wilhelm Hoffman

In the novel At Bertram's Hotel, Wilhelm Hoffman and his brother Robert are the two wealthy brothers who are the true owners of Bertram's Hotel, as revealed by Mr Robinson.

According to Mr Robinson, Wilhelm is of Swiss nationality, but was probably not born there. He has a good deal of influence in banking circles, and although he keeps strictly on the right side of the law, he has been behind some questionable deals. He operates solely on the European continent, not in England.

Wilhelm was thought to be behind some foreign currency rackets just after the war, but the police were unable to prove anything.

It is revealed that Wilhelm and Robert handle the illegal financial transactions of the hotel.