This book is centered around the death of Greg and Tess MacAvoy and their circle of friends, three couples, who recount their past travels and memories with the deceased couple. Each couple thinks about how they may have contributed to their deaths. The book revisits the days when the friends met and grew up on the island and the chapters alternate between each friend's memories and viewpoint. There's a lot of storylines and characters to keep up with in this book. Affairs, gossip, drama, mistrust....a lot to keep up with.