A judge and his wife have disappeared while boating on the Colorado River. Three river guides have had their throats slit. And Longarm will have to keep his head above water as he battles the ruthless river rats--or he may find himself up the creek without a paddle.

The name makes cavalrymen cower, hard cases head for the hills, and bandidos cry, “¡Vámonos!” They call her Señorita Revenge. Savage and merciless, she and her band of kill-crazy Kiowa have been cutting down soldiers like blades of grass in the Texas Big Bend country north of the Rio Grande. If any man can de-claw this homicidal hellcat, it's U.S. Deputy Marshal Custis Long. But when Longarm arrives at the cavalry outpost, he finds a half-mad...