The Three Investigators in the Secret of Haunted Castle

Even when his friends throw him a surprise party, boy detective Jupiter Jones refuses to attend, instead choosing to investigate the case of a mysterious intruder. But when the case leads straight to Terror Castle, Jupiter must enlist the help of his friends, Pete and Bob, so that they can investigate the secrets that like within the castle together. However, Jupiter may find more than he bargained for when the case begins to lead back to the disappearance of Jupiter's own parents.