A shady merchant called Toad Snout, together with Shangar the Indian, sells a load of goods infected with smallpox to the Mandans. Zagor crosses half of America to help our friends Kee-Noah, Beau and Piotr Bezukoff, but it might be too late: by now death reigns in the Mandan village!
In this issue:
The cover story begins on page 13. The story entitled “Il segreto della mappa” (by G. Pellizzari and F. Donatelli), which began in issue 258, ends on page 12.