When Marina discovers a boy with a head of tentacles and crab claws for hands, she resolves to help him unravel the mystery of his past ...

Marina meets William while exploring the haunted pier in her seaside town. But William is not like other boys.

He's ... different - with crab claws for hands and tentacles that stretch from his head. What he needs from Marina - if she's ready - is a friend who can help him to unravel the fishy mystery of his past ...

'Charming and delightful ... a whimsical adventure story stuffed to the flippers with fish puns and fun.'
Sam Sedgman, co-author of the Adventures on Trains series