Rohmer (Arthur Henry Sarsfield Ward) was a prolific English mystery writer, best known for the master criminal Dr. Fu Manchu and his opponents Denis Nayland Smith, Dr. Petrie, named after the Egyptologist Flinders Petrie, and the beautiful Karamaneh, the source of Petrie's daydreams. He also wrote under the name Michael Furey. This is the sequel to Dope, Rohmer's macabre mystery, featuring Red Kerry. The book begins: The 8:50 from Blackwall was more than an hour late. Since the chilly coming of dusk, London had battled with her pet demon, King Fog. Slowly but surely he was conquering. Intervals of comparative visibility were growing more rare; the enemy was establishing a stranglehold.