The Enid Blyton Adventure Series
Book 4: The Sea of Adventure (Part 1)
S1 • E10 Aug 11, 1996 25m
The family have arrived in New Zealand. They are met by Bill's friend and colleague - Dennis who needs Bill's help to solve the mystery of a missing agent who was investigating a villain, Perez. Bill's not interested but finds himself involved anyway. Perez has his sidekick, install a tracking device on it and makes plans to insure Bill and the children pose no threat to his nefarious scheme.