It has been six long months since Ellie and her friends returned home from a camping trip to find their families and neighbors imprisoned by an enemy that threatens to steal Australia's freedom. Only Ellie's group can stop this enemy. Like seasoned soldiers, they have adopted extreme methods.

When she's not gathering food and supplies or running for her life, Ellie wonders at what they've become. Are they now ruthless terrorists themselves? What price will they pay for their actions? The more involved and vicious the battle gets, the higher the stakes. Everyone is fighting to survive.

A Killing Frost is the third in the series by John Marsden that began with Tomorrow, When the War Began and continued in The Dead of Night. As Ellie and her gang persist in fighting back, A Killing Frost proves the most riveting adventure yet.