Search in the Desert, a story about the same Four Corners area, preceded this second archaeological mystery which examines some of the laws protecting ruins. Jerry and Al, two boys who live in Tres Manos, are invited out to dinner by Al's Uncle Mac, presently at work on a Zuni dig nearby. The restaurant they go to is The Hidden Ruin, owned by a Mr. Gifford who features, along with food, a ruin in which he plants relics for visitors to find and keep. Jerry, Al and Mac all begin to wonder where he gets the relics and the two boys, after they start detecting, expose Gifford's relic racket as well as a poaching business on the side. With material on the ancient Indians of the area this bids for history and mystery interests.