Nightmare Trail — Alan Riefe

Bert Slaughter is a veteran field detective with a hard-won reputation as the best there is...Son, Ben Slaughter has a college sheepskin and a deadly trail instinct to boot...Together they ride for Wells Fargo00and fight an outlaw foolish enough to take up their challenge. This time, when the Belgian crown jewel called "The Dragon's Eye" is snatched from under heavy guard, Slaughter & Son take the case--and a heap of trouble. From Kansas City, across the wild open plains, to the opium dens of San Francisco's Chinatown, Bert and Ben dodge enough lead to stop a locomotive on their single-minded quest to see justice done and their enemies avenged!