Slocum's Gold Mountain (Slocum Series #315)

Slocum: Today's longest-running Western action series!

When a dying man begs John Slocum to deliver one half of a mysterious map to his brother in Virginia City, he finds himself in a motherlode of trouble facing a gang of cutthroats, a pair of devious and delightful women, and a winner-take-all hunt for a stolen fortune.