Plot summary

The Hardy Boys and Chet Morton travel to Canada's Northwest Territories to recover a stolen Viking artifact (a runestone). They also smash a group of thieves robbing recreational lodges around the Great Slave Lake. They visit Saskatoon, Saskatchewan; Edmonton, Alberta; Fort Smith, Northwest Territories; and Hay River.

• Publication date: 1963
• Ghostwriter: Alistair M. Hunter
• Summary: The boys head to Canada's Northwest Territories in search of a stolen Viking runestone, and foil a group of thieves in the process.