The Photographer #13: The Photographer and the Unknown Victim, by James Holding (epub/Kindle/pdf)

The Photographer is hired to kill a man using a model to smuggle heroin into the U.S. Evesdropping, he learns that the model double-crossed his victim, hired the Big Ones to have the man killed, and wants to sell her heroin to the Big Ones. Double-cross after double-cross follows!