Frank and Joe Hardy Fenton Hardy, the famous private detective and father of the Hardy Boys, asks his sons Frank and Joe to help him with his latest case involving a criminal named Felix Snattman and the illegal drug trade smuggling of stolen drugs. Hardy directs Frank and Joe to a house on the cliff, whose location overlooking Barmet Bay offers an excellent vantage point to watch for smugglers. Frank and Joe are tricked into the house by cries for help, and they get trapped in the attic. In the meanwhile, their father disappears and the things don't look god for the Hardy boys.