Jackals — Charles L. Grant

The pretty young woman whose car has broken down, signaling for help...the stubborn tailgater who follows too close, for too long...the wild driver who causes accidents but is never a victim of one...

These are the jackals, hunters who follow the nation's highways and byways, preying on the weak and unsuspecting. Jim Scott hunts jackals. Once they took someone he loved, and he's never forgiven them. When beautiful, battered Rachel turns up on Jim Scott's doorstep with a tale that can only mean she barely escaped a hunting pack, Jim knows the jackals are coming for him. It's time for the final showdown.