I liked how the book hits you with the biggest puzzle piece straight from the beginning. Alice has seemingly built her life on lies and then one day she sees "her" and you know it's going to be a roller-coaster of a novel of twists and turns, of guessing "who dunnit" and the kind of reading where one says "One more chapter!" Seems like the book is written in multiple points of view; and from the quick impression I really like that Abby sounds like a teenager.