Saddle tramp Sam MacKinnon is in trouble. Double-crossed by his partners after robbing a saloon and gambling hall, MacKinnon has been left behind in the mountains of southern New Mexico with busted ribs, a banged-up head, no gun, and no horse. And no chance--because aging lawman Nelson Bookbinder and his Mescalero Apache scout, Nikita--both made legendary by dime novels MacKinnon has read--are leading a small posse hot in pursuit of the bandits...