Beyond the Sea by L.H. Cosway

On a lonely cliff beside the vast blue sea there is a house.
In the house there lives a girl, and in the girl there lives a dream.
Soon she’ll be as free as the fishes that swim beneath the water. But until then she bides her time and lives quietly, her every move ruled over by an uncaring, heartless stepmother.
The hope for freedom is all she has to hold onto. So close she can almost taste it. But when her stepmother’s estranged younger brother comes to stay, he presents a mystery that lures her in.
The girl doesn’t understand that beneath the allure of the unknown sometimes all we find are horrors. And in searching for the truth, her heart is in danger of falling like a rock to the bottom of the deep dark sea.