The Arizona Triangle — J.R. Roberts

Twenty-one people in Arizona have a heap in common. They've all ridden into the same triangle-shaped stretch of land--and not one has ridden back out. The Secret Service sent in a woman agent to investigate, and she vanished without a trace. Next they sent in a man who disappeared into the dust. This time, they're sending in a legend...

Clint Adams doesn't much fancy the prospect of being number twenty-two. But the Gunsmith has never turned his back on trouble-or on his friends. So he's riding blind into the middle of nowhere, with nothing to go on-except a blood-bitter vow to find Kate O'Hara and Jim West if it's the last thing he does. And the way things are looking, it may well be!