Everyone’s favourite kid detective is back for a second mind-blowing instalment, packed with all the off-the-wall humour, action and friendship of the first book. This time, though, it’s an adventure on the wide open ocean, and Ruby is all at sea…

Can she crack the case of the Twinford pirates while evading the clutches of a vile sea monster as well as the evil Count von Viscount?

Well, you wouldn’t want to bet against her…