Jupiter Jones refuses to attend the surprise party his friends throw against his expressed wished. However he loves investigating an intruder, who gets away but without the clue he came looking for. It leads to another Californian ghost town and its "castle's" secret, which links to orphan Jupiter's parents.
The Three Investigators and the Secret of Terror Castle
When the case he's working on leads straight to Terror Castle, boy detective Jupiter Jones enlists the help of his two friends. Together they investigate the castle's many secrets, but end up finding more than they bargained for.
