Pyro Watson and the Hidden Treasure — Nette Hilton

Pyro Watson loves pirates, treasure, and all things to do with maps and tales of long ago. When his mother goes away to nurse Nan, Pyro is left stranded in a caravan at the beach with his Aunt Mor. So Pyro calls in his alter ego, Simeon the Pirate Fighter, to pass the long evenings and longer days. Then Pyro meets local boy Min and his four-legged mate, Becks. Life becomes interesting -- even downright dangerous -- when the town bullies claim the beach as their own. Can Pyro and Min draw on Simeon's daring to defend themselves?