The Third Day, The Frost (The Tomorrow Series - Book 3) - out of print

John Marsden

Live what you believe in... die fighting for it. The third day comes a frost... a killing frost. The enemy spreads across the land, cold and relentless. They invade. They destroy. They kill. Only the heroism of Ellie and her friends can stop them. When hot courage meets icy death, who will win through? ...