Tidemagic

Amongst the cobbled streets and misty alleyways of Shelwich, magic rises and falls with the Tide. When the Tide is out, the magic ebbs to a low murmur. When the Tide is in, the magic is high - and Tide-blessings are at their strongest. For most people, the Tide-blessing they are born with is nothing more than a simple party trick: eyes that change colour, or the ability to recite a poem backwards. Some, though, are blessed with more powerful gifts. Telepathy. Flight. Or, in the case of Ista Flit, being able to transform to look like someone else. Anyone else.

In her first adventure, Ista Flit and her friends saved the town of Shelwich from a monstrous foe—but her father is still missing. She has a new clue though: a key, engraved with mysterious symbols, and a note saying "any door with a keyhole will do." This key transports Ista, Nat, and Ruby to Glass Island—where creatures Ista thought were mythical turn out to be very, very real. A sinister wraith haunts the reed-beds, and deviously seductive, fairy-like marsh spinners lure people in to dance at their revels—and never let them go.

Ista Flit and her friends Nat and Ruby have foiled a dastardly plot by the Hettle family to take control of the town of Shelwich, but Ista still needs to find her missing father. A magical key transports her to the mysterious Glass Island, where a sinister monster haunts the reed-beds, and the local inhabitants are falling under the seductive spell of the marsh spinners.