<p>Ella, Astrid, and Sydney were planning the perfect summer after high school graduation. But when Astrid commits suicide in a lonely cabin, the other girls' worlds are shattered. How could their best friend have done this--to herself and to them? They knew everything about Astrid. Shouldn't they have seen this coming? Couldn't they have saved her?</p> <p>As Ella hunts for the truth, and Sydney tries to dull the pain, a chilling Facebook message from Astrid leaves them wondering whether their beloved friend is communicating from the after life. The girls embark on a journey to uncover Astrid's dark secrets. The answers to those questions--questions they never dreamed of asking--will change their lives forever.</p>