Longarm and the sand pirates

the long version

"When Deputy U.S. Marshal Custis Long trails a gang of murdering outlaws into the desert, he finds the stinging sandstorms worse than any hail of lead. And after one storm blows over, Longarm finds himself in the middle of an abandoned town that was previously hidden under the sand. Soon he discovers the town isn't the only thing that was buried. A lovely lady with a treasure chest of her own has braved the elements to find some hidden loot. Funny thing about treasure, though--it draws hard cases like corpses draw buzzards. And as the town becomes repopulated with armed men, the sands of time may be running out for Longarm..."--p. [4] of cover.