Auguste Groner,
The Case of the Lamp That Went Out
“ Joseph Muller brought many other cases to a successful solution. But for years after this particular case had been won, he was followed, as by a shadow, by a man who watched over him, and who, whenever danger threatened, stood over the frail detective as if to take the blow upon himself. He is a clever assistant, too, and no one who had seen Johann Knoll the day that he was put into the cell on suspicion of murder would have believed that the idle tramp could become again such a useful member of society. These are the victories that Joseph Muller considers his greatest. ”
