A killer. A manhunt. The triumph of justice and of the wolf.The greatest event in Yellowstone history.Greater Yellowstone was the last great truly intact ecosystem in the temperate zones of the earth—until, in the 1920s, U.S. government agents exterminated its top predator, the gray wolf. With traps and rifles, even torching pups in their dens, the killing campaign was entirely successful. The howl of the “evil” wolf was heard no more. The “good”...