Luna, her father, and her little brother, Tile, are still struggling with grief.   When Luna goes to clean out her mother's old studio, she's stunned to find her mom's cell phone there—charged and holding seven unheard messages. As Luna begins to listen to them, she learns more about her mother's life than she ever wanted to know . . . and she comes to realize that the tidy tale she's been told about her mother's death may not be the whole truth.

    She's never walked its hedge maze nor found its secret chambers; she's never glimpsed the shades that haunt it, nor hunted for lost diamonds in its walls. But all of that is about to change. After her grandmother passes away, Sarah and her friend Jackson decide to search for the diamonds--and the house comes alive. She discovers that she can see visions of the house's past, like the eighteenth-century sea captain who hid the jewels, or the glamorous great-grandmother driven mad by grief. She grows closer to both Jackson and a young man named Richard Hathaway, whose family histories are each deeply entwined with her own. But when the visions start to threaten the person she holds most dear, Sarah must do everything she can to get to the bottom of the house's secrets, and stop the course of history before it is cemented forever.