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The Quests head to the fjords of Norway, where something very strange is happening at Raklev Castle. According to the locals, the castle's gargoyles have come to life to terrorize the territory. Jonny and his friends soon discover, however, that the "monsters" are actually human spies, who dearly covet a new anti-gravity device being developed by a Norwegian scientist. The background art in this episode has been singled out by many reviewers as some of the finest graphic renderings ever to emerge from the Hanna-Barbera cartoon factory. "The House of the Seven Gargoyles" originally aired on February 18, 1965.