Originally published in the U.K. by Hammond, Hammond & Co. as "The Man Who Sold Death" in 1964. This Italian edition is number 115 in the (then) weekly "Segretissimo" series published by Arnoldo Mondadori Editore on 10th February 1966. James Munro was a pseudonym of James Mitchell, the creator of "Callan." Cover art by Carlo Jacono.