Salvation is a world away.

Trapped in a city no one knows exists, Squid lies dying as Nim fights for their lives. With every minute, their hope of getting the vaccine back to civilization is fading. From the brink of death and the edge of the world, Squid must once again conquer dangers even more sinister than the undead - the future of humankind depends on it.

But Squid's efforts will be wasted if Lynn cannot keep the people of Alice safe until he returns, and Lynn is now a hostage of the Holy Order. Forced to face punishment at the hands of the High Priestess, Lynn is at the mercy of the mad cult, as beyond the wall the undead horde continues its relentless approach.

Caught between madness and mindlessness, the odds are stacked against Squid and Lynn. Will they triumph or do they already walk in a world of ash?

The thrilling conclusion to this zombie apocalypse series is perfect for fans of James Dashner's Maze Runner series and Michael Grant's Gone series.

Justin Woolley has been writing stories since he could first scrawl with a crayon. When he was six years old he wrote his first book, a 300-word pirate epic in unreadable handwriting called "The Ghost Ship". He promptly declared that he was now an author and didn't need to go to school. Despite being informed that this was, in fact, not the case, he continued to make things up and write them down.

Today Justin is the author of the Australian-set dystopian trilogy The Territory Series, comprised of the novels A Town Called Dust, A City Called Smoke and A World of Ash. Justin lives in Melbourne, Australia with his wife and son. In his other life he's been an engineer, a teacher and at one stage even a magician. His handwriting has not improved.