Young Jethro is undecided about remaining or riding into the sunset. His head tells him a man with a price on his head should drift on. But what of the widowed Susan McSween? Or of his friend, Billy the Kid? Or the starving Mescalero Apaches? Or the poor Anglo farmers and Mexican peons strangling from "the ring's" bloody yoke?

Gunnar's Mine is fourth in the Valediction for Revenge series; the tale of Jethro Spring, an unwilling warrior born of two worlds, who, for love and friendship, duels with crushing forces while struggling for his own soul.

Jethro Spring again seeks fortune's breeze and reaps fury's whirlwind, this time by filing a public land homestead claim on a remote and unwanted corner of land claimed by an avaricious and lawless cattleman..