Alice England and her friends are back with a mystery that throws them straight in the deep end.
Marine biologist Stingray Bolland dies suddenly, but no one suspects anything sinister. That's until Alice's special talent and her powers of observation reveal that he was studying a new species in the waters around Damocles Cove – and that he saw something mysterious right before he died.
More and more people are spotting a strange creature in the cove, and there are claims it's a storm kelpie of Scottish legend. It seems impossible that an ocean-dwelling blue man who threatens to sink your boat could be real – but on a sightseeing boat tour with Cal's cousin, Alice, Cal and Violet encounter something unusual. Could the legend be true?
As fate, fortune and scientific discovery collide, Alice and her friends must uncover what's really going on in Damocles Cove – and whether the truth is even stranger than the legend.