T. T. Flynn
Published in Dime Detective Magazine, September 15, 1933. Collected in .
Val Easton learns that the Black Doctor, aka Carl Zaken, is still alive albeit in a D.C. hospital. It is not Zaken that Easton will have trouble with, though, but with Chang Ch'ien, Zaken's partner. That man is involved in a plot to get hold of a very important and deadly chemical formula.