Carter O'Brien's gun is for hire, but only when the job – and the money – are right. He's been everything from lawman to bounty hawk and he's as tough as they come.Right now he's riding shotgun on an expedition led by an old friend from his army days. Their goal – to find a lost canyon of silver down in Mexico. But the way is blocked by gunmen working for a greedy Mexican businessman and a ghost from O'Brien's past. To survive, O'Brien must kill or be killed.As the expedition goes deeper into the untamed sierra, the body count starts to rise. O'Brien himself is left to die a slow death in the merciless desert, but it's only when he meets a fiery Mexican señorita that he discovers that it's not a trail of silver he's been following all this time, but a trail of revenge …Includes the essay BEN BRIDGES AND CARTER O'BRIEN!!