'Second book in the delightful series about Thora, the half-mermaid with a blowhole on the top of her head, and Shirley, the green sea-unicorn. It doesn't take long for Thora to find her feet in London, Mr Walters' home town. Or to hook up with former movie star, Pamela, who just happens to also be a mermaid. But life in the big smoke grinds to a halt when the family's houseboat, the Loki, is stolen and Thora's very special new friend Shirley goes missing. Fortunately, Mr Walters' old friends down at Snug House bail them out with an invitation to their country estate. But as Thora soon discovers, life at Snug House comes with its own set of problems and complications, including money worries and a nerdy girl in spectacles named Louella. With Thora's help, the fortunes of Snug House turn around, but the unfinished business in London still needs resolving . Ages 7-10 years' (Publication summary)