Hunting for Hidden Gold
By: Franklin W. Dixon
In the beginning Frank and Joe Hardy become involved in a mystery when their father calls them out west to Montana. He calls them out west to find old gold near the village of Lucky Lode and to help with a case. They are searching for a gang that is involved in a robbery. When they get there they find their father badly hurt. They begin the investigation on their own and learn about a mystery. The mystery is about gold that was stolen from a prospector years ago.
During the climax they meet Mr.Burke who owns the general store in Lucky Lode. They find out he is a spy called "Slip Gun". He is spying on them and working for Big Al the villain. While hunting for the hidden gold the Hardy Boys spot a cave. They head into the cave to search for clues on where the gold might be. But, they run into a pack of wolves before they find any clues and have to find a way to get out of the cave.