Hunting for hidden gold /

"Based on the original of the same title."

Danger in the fog -- A suspicious summons -- Shortcut to peril -- A painted warning -- The strange blue light -- Ghost music -- A rooftop struggle -- Tommy-knockers! -- The crowbar clue -- Ambush trail -- Shadow of the bear -- Big Al's orders -- A fight in the dark -- The broken knife -- Underground chase -- Cliff hideaway -- The secret listener -- North from Lone Tree -- Wolf prey -- Windy Peak prisoner.

Timber wolves, a Rocky Mountain blizzard, and a mine cave-in are only a few of the perils Frank and Joe Hardy encounter during their search for the principal members of a notorious gang responsible for a payroll robbery. In the old Montana mining camp of Lucky Lode, the young detectives puzzle over a series of mysterious events. A piano-playing ghost haunts the long-abandoned dance hall. Eerie blue lights flash from the hilltop cemetery in the dark of night. Strange men arrange a meeting at Shadow of the Bear. A suspect disappears through a curtain of frozen ice. How are these events related to the men who kidnapped the boys in Chicago? Who booby-trapped the helicopter which flew the young detectives to the ghost town? And what ever happened to Bart Dawson who seemingly deserted his gold-mining partners twenty-five years ago? Clue by clue, Frank and Joe cleverly fit into place the scattered pieces of this dangerous puzzle and come up with the astonishing solution. - Flyleaf.

During their search for members of a notorious gang responsible for a payroll robbery, Joe and Frank Hardy encounter timber wolves, a Rocky Mountain blizzard and a mine cave-in.