A Pirate's Promise

Mysterious footprints in the sand. A fallen map. Who has been visiting a secret sea-cave and what has been their business? Hobnail and her friends Warty Toad and Snidey Slug have a problem. They do not want uninvited guests - especially when they are sometimes strangely invisible. But Marnie McPhee and her loyal pi-rat Romany Ratticus have made a promise. A promise to drowned shipmates. More trouble comes Hobnails way when Liar-nel the Leaf Man discovers pirate pretties are being stowed away in the Dark Hole. She will have to act quickly if she is to outsmart him and help Marnie to keep her promise. Because a pirates promise is never broken.