The Tunnels of Tarcoola

Come round here!' called David. 'We've found something.' 'I'm showing them.' Andrea pushed him aside. 'It's my cave!' She lowered herself into the hole. Her head disappeared, and a moment later they heard her voice, faint and slightly hollow. 'Come on!' A network of tunnels leading under the park, a secret exit to an abandoned mansion, a hidden box of documents...all very mysterious, but it's just a game, right? Wrong. When shadowy figures start watching every move they make, Kitty, David, Andre