گره جزر و مد

I cant go back in the house. Im restless, prickling all over. The wind hits me like slaps from huge invisible hands. But its not the wind that worries me. Its something else, beyond the storm...Sapphire and her brother Conor cant forget their adventures in Ingo, the mysterious world beneath the sea. They long to see their Mer friends once more. But a crisis is brewing far below the oceans surface, where Saldowr, the wisest of the Mer, guards the Tide Knot. And soon both Sapphire and Conor will be drawn into Ingos troubled waters.