Oxtail

A group of alien cattle rustlers, the culprits behind those mutilations going back 50 years, are still dispatching herds in southwest Kansas. But now night raids in their triangular craft are coming up short--the bovine gene pool's gotten small...offering too little reward for their labors. Their best remaining hope: to conscript an Earth-human collaborator, to force an able someone to procure new breeds for them. If only their random choice were other than Harley Rennet, an aging sign pain...