Somewhere Beyond The Sea — Samie Foster

Davey has been trapped on a rock of a island his entire life building a glass castle with his father for the king. He feels as though he is prisoner with no contact with the world beyond the island. Then one day during a storm, a odd yet captivating girl washes up on shore. She says she's from somewhere beyond the sea, but Davey's new friend is full of more mysteries than he ever expected.