Twins - Books 14, 15 and 16In this exciting continuation of the 'Twins' series, Casey and Ali face more unexpected problems as Ali competes for Liam's attention. Neither of the girls ever anticipated the rift that develops or the envy that follows. For Ali, in particular, this is an emotion she is unfamiliar with. While Madison continues to cause havoc, the other girls attempt to ignore her but this proves to be very difficult, especially when her annoying behavior leads to frightful circumstances that affect everyone at the camp. A freak storm then causes the nearby river to flood, and the outdoor campers may be forced to evacuate. However, Madison is missing, and added to that problem is the fact that Liam, Ethan, and a few other kids have disappeared as well. Will they all return safely, or will the worst imaginable scenario take place? And what about Casey and Ali? Are they finally able to restore their relationship as sisters, or will the summer destroy their friendship forever? This is another great book for girls 9 -12 that all fans of the Twins series are sure to enjoy.