Frecce nere

Sharing with Kit Willer and Tiger Jack the leads to follow in the investigation into the stagecoach massacre, Tex pretends to be the cousin of Sam Totter, the main suspect. The real culprits come to light: they are the greedy barman Whiskey Bill and the slimy Mark Prentiss, who dares to deceive the beautiful Lucy Totter after having tarnished her father's honor with false accusations. Shortly thereafter, on the Echo Mountains, the witch Na-Ho-Mah prophesies to the pards the arrival of a dark threat: Tahzay, son of Talikay, the sorcerer who was the leader of the Children of the White Bison, wants to avenge his father!

At the ghostly ruins of the Stone Tiger, where mysterious treasures are hidden protected by a gigantic anaconda that lives at the bottom of a well, the final clash takes place between the pards and the revived Children of the White Bison led by Tahzay. But the troubles with the Indians are not over: bands of rebel Apaches, led by Rayakura, attack military outposts and raid the farms along the Green River. The Red Indian leader dies at the hands of Tex, but another warrior takes command of the revolt: Nokal. He is responsible for the massacre of the peaceful town of Aultman.