6Chapter VI - A Strange Discovery
18Chapter XVIII - An Exciting Time
7Chapter VII - The Secret Passage!
19Chapter XIX - Off to the Secret Island
8Chapter VIII - A Narrow Escape!
20Chapter XX - Peace on the Island
9Chapter IX - The Prisoner in the Tower
21Chapter XXI - The Enemy Find the Island
10Chapter X - The Rope-ladder
22Chapter XXII - Mike’s Marvellous Idea
11Chapter XI - Jack has an Adventure
23Chapter XIII - Alone at Peep-Hole
12Chapter XII - Another Narrow Escape
24Chapter XIV - The End of the Adventures
