Josh and the Gun Fort

While rescuing Tas's dog, the boys get trapped in a WW1 gun fort. Is it their own wits - or the ghost of a soldier - that enables them to escape?

Chapters include:

1. The Gun Fort
2. Rocky in Trouble
3. The Rescue Goes Wrong
4. The Ghost of the Gun Fort
5. Sitting on a Time Bomb
6. The Old Diary
7. He's Talking to Us!
8. Treasure Map
9. A Way Out
10. The Army Takes Over
11. The Soldier's Treasure
12. A Medal for Josh