Used book – The Famous Five, Volume 6: Five Go to Smuggler's Top, Enid Blyton

This summer, the Famous Five have decided to spend their holidays in a caravan. They set up camp by a lake, very close to a circus camp. They quickly become friends with Pancho and his monkey Bimbo. But Pancho's uncle, Carlos, and his sidekick Dan, are not at all pleased with the children's arrival...

Book originally published as: Five Go to Smuggler's Top