It's like an inverse retelling of 'The Parent Trap.' Abby and Savvy discover they are full sisters via a DNA test. After an in-person meet they decide to attend the same camp. While getting to know one another they hope to also unravel the mystery of why one girl was given up for adoption while 18 months later, the second is not. Camp is complicated. Both girls find that long-time friendships are in crisis adding a new level of difficulty to their mission. Then both sets of parents show up--on the same day. The initial confrontation is drama-filled and adds to the mystery. Abby and Savvy have evidence that their parents were friends at one time. How can they repair the ruins? How can the girls keep from scorching current friendships? When is it an appropriate time to go from friend to more than friend. The couples in this new YA book are diverse, but I enjoyed having the romance aspect more on the back burner while friendships were explored and strengthened for both generations. There were moments when Abby and Savvy were discovering shared experiences that brought tears as did the forethought of Poppy. Not as fun for me as 'Tweet Cute,' but another entertaining title from Emma Lord.