Grace and Jack Angel appear to have the perfect lives. He's a highly successful lawyer who defends battered women while she stays at home wife with the perfect house. They have wonderful friends who are slightly jealous of them. 
 I don't want to give too much away and part of the reason I didn't love this book is because I could see what was going to happen fairly easily. Still, it's a quick read and the character study is fascinating. I especially like Millie, Grace's sister who has Downs Syndrome but is under appreciated. 
 The author does a good job alternating between past and present, letting the backstory gradually be known to the reader. This is a great travel or beach read, a very entertaining thriller.