Ace high in wilderness

The Civil War had ended six years before, but ex-sharpshooter John Wright couldn't forget his incarceration in the Confederate POW camp at Andersonville. There, he was a powerless observer when a guard murdered his childhood friend. However, two ex-prisoners show up, claiming that they have tracked down the murderous prison guard and need help bringing him in. They offer John a share of the reward - but all is not as it seems. The road to justice is rocky indeed.