The Double Four

This novel is a series of interconnected episodes centered on Peter Ruff. In this novel, Peter Ruff is invited to Paris to meet with the enigmatic old woman at the helm of the titular organization known as the "Double Four", in which he has earlier been deeply involved. He finds the leader on her deathbed, from which she informs him that he is to be her successor. Ruff is hesitant to accept, but he has no choice. Following that, he is quickly installed in London as grandee Baron De Grost. This book paints a vivid picture of the origins and activities of the Double Four as a notorious criminal organization. Will Ruff embrace his position as the grandee Baron De Grost?