Big Game: Colorado’s San Luis Valley was a wildlife poacher’s paradise: Then an undercover federal agent arrived. (Nick Davidson, May 2026, The Atavist)

Morrison had worked in wildlife law enforcement for a decade, beginning as a state game warden in Ohio, where he grew up. From March to December, he checked anglers’ licenses and chased night hunters jacklighting deer—an illegal tactic that blinds animals for easier killing. When the Ohio Division of Wildlife required a covert operator to infiltrate a poaching ring in the Appalachian Mountains, Morrison jumped at the opportunity. He found that he had a knack for going undercover, and in 1984, the Fish and Wildlife Service hired him as a federal investigator. He spent the next nine months on Long Island, New York, casing duck hunters, scallop boats, and taxidermists who illegally stuffed migratory birds.

Then he got a call from Terry Grosz, who offered him a position in the Rocky Mountains. Grosz was a burly, no-nonsense special agent who oversaw a network of two dozen operatives covering eight states. Morrison had long dreamed of living in rugged country. He packed his pickup and drove west.

Not long into the job, Grosz called Morrison into his office at Fish and Wildlife’s Denver headquarters. Morrison was in his early thirties at the time, with tousled blond hair, dark blue eyes, and a Sam Elliott voice. (Grosz later described him in a book as a “tall, muscular drink of water with not more than four percent body fat on his lean six-foot, five-inch frame,” who moved “with the deliberate energy and practiced smoothness of an anaconda.”) Morrison had already initiated three covert investigations in the Rockies. In one he posed as a woodcutter working for an outfitter who poached bighorn sheep at a remote hunting camp in Wyoming’s Wind River Range. In another he made backroom deals with a Korean sex trafficker peddling black market bear parts in Colorado. These were worthy projects, and Grosz was pleased with their progress. But he had called Morrison with a special assignment in mind.

A swaggering lawman with a cowboy sensibility and a soft spot for what he called “the poor critters,” Grosz took personal offense at the illegal slaughter of animals in his domain. He was especially peeved about the situation in the San Luis Valley, some two hundred miles south of Denver.