Ray Patton, a powerful and unscrupulous businessman, wants to take over the entire area between two rivers, the Rio Concho and the Rio Puerto in Arizona. Tex and Kit stay in Holbrook, and with the help of old sheriff Amos Walker, they want to put Patton i
Willer and Carson are drawn into a great intrigue, connected to the assassination of Abraham Lincoln, the public disclosure of which could lead to major upheavals in the highest circles of government.
A military patrol carrying pay to Fort Gila is attacked, the soldiers are brutally murdered and scalped. Evidence points to an Indian ambush, but the fact that the money is missing makes Tex and Carson suspicious, and they begin to investigate...