THIRTY ‘Jack, you mentioned a secret back door?’ It was Della, and she confirmed Seb was getting Jonas to bring down some plans of the fort. ‘Back door?’ She repeated, letting him know she had not forgotten, which was just as well, as Jack had forgotten; he was putting on his tan brogues and stopping Mandy from throwing away his bloodied plimsolls. ‘Yeah, all old forts have them, and often they lie undiscovered for centuries. They won’t be on Seb’s plans otherwise they wouldn’t be secret, would they?’ and Jack allowed himself a chortle, saw the pigeons and sniffed, Mandy thrust her hanky at him, just in case. Della showed some of her own impatience, equally a match for Mandy’s, ‘Well, that was a brilliant idea, Brains, so all we have to do is find the secret back door that has remained

