The lightkeeper's daughters

"Though her mind is still sharp, Elizabeth's eyes have failed. She fills the void with music and memories, but the past becomes all too present when her late father's journals are found in the ruins of a shipwreck. Elizabeth goes through the diaries with the help of Morgan, a deliquent teen doing community service. Entry by entry, the unlikely friends are drawn into a world far removed from their own -- Porphyry Island on Lake Superior-- and begi...