A Killing Frost by John Marsden

This is the third installment of the saga begun in Tomorrow, When the War Began and continued in The Dead of Night. Six months have passed since an invading army attacked Australia. Ellie and her band of teenage guerrilla fighters are rapidly becoming harder, more jaded, and less inhibited. Their plan this time is to destroy the port at Cobbler's Bay, a strategic harbor for the enemy. Throughout most of the book, the young fighters outwit the bad guys and manage to keep just one step ahead of them. However, they are captured and taken to a maximum-security prison. There they are certain to be sentenced to death for their activities. This book's main intention, aside from great storytelling, is to show that war is not neat and tidy. As in the other titles, Marsden poses several questions about right and wrong, the nature of evil, and what human beings are capable of enduring under extreme circumstances.