The Famous five Five go to Smuggler Top by Enid Blyton

Siblings Julian, Dick and Anne are spending the Easter school holidays with their cousin George at her parents’ house, Kirrin Cottage. After a tree falls on the house, the four children are sent to Smuggler’s Top, the home of Mr. Lenoir, a fellow-scientist of George’s father, Uncle Quentin. Smuggler’s Top is a queer house at the summit of an old hilltop coastal town, partly surrounded by dangerous marsh. The children are welcomed by Pierre “Sooty” Lenoir (Julian’s and Dick’s schoolmate and Mr. Lenoir’s stepson) and his half-sister Marybelle. Mr Lenoir hates dogs, so George’s dog Timmy is hidden in a secret passage.  The Famous five Five Go to Smuggler’s Top by Enid Blyton (soft cover)