Three sisters receive a letter from Nana Rose, their recently deceased paternal grandmother. “My darling girls. You were once so happy in this house. Now I’m gone, all I ask is that you spend one last summer here together on Dune Island. And please forgive me, your Nana, for the secret I’m about to tell you…” Arriving at the honeysuckle-covered beach house inherited from her beloved grandmother, recently heartbroken Jill hopes to convince her two feuding sisters not to sell a place so full of happy childhood memories. But the envelope waiting on the driftwood table changes everything. In her elegant handwriting, Nana Rose promises a…