Australia joins the teen-franchise fray with a butt-kicking girl hero. It's adapted from the first in a series of seven novels for young adults, with a gang of teenagers returning from a camping trip to find their town has been taken over by an invading army. This has a stand-out, star-making performance from Neighbours' Caitlin Stasey – if only she didn't always emerge from battle looking as if she'd just stepped out of a L'Oréal advert.