The Castaways is about a group of friends who have to live life after 2 of their members die in a tragic accident. Their story is told by each one of them and combines past and present to bring us up to speed. Hilderbrand does a seamless job of weaving together the past and present in each character's voice, the reader never feels confused about who is talking and what part of the story they are telling. The Castaways tell the story of Tess and Greg and their friendship with them as they also reveal their own private torture about the part they each feel they played in the deaths of Tess and Greg. This book is a vivid portrait of friendships woven so tightly together that sometimes love looks like hate, it takes the reader through the realities of grief and the journey of finding the way back from grief, and it displays how true love can be and is healing. I really enjoyed this book.