A series of violent murders in Chinatown led to a huge manhunt, to find an imperial Japanese agent, dreaded by all, even Tong: Lotus Écarlate, first appeared in B.P.R.D. volume 4, Les Morts. Meanwhile, in the air, a zeppelin filled with Nazis is about to pour a deadly gas into a big city in the United States. Fortunately, Lobster Johnson is watching!