A scientific experiment goes wrong, and a deadly epidemic sweeps through Scotland. Callie might have survived the disease, but she didn't survive the treatment. She was kidnapped and experimented upon at a secret lab, one that works with antimatter. When she broke free of her prison, she unleashed a wave of destruction. Callie's brother Kai is looking for her, along with his friend Shay, who has been infected and is beginning to change. Now they're looking for a cure-- if there is one. -- adapted from jacket.

"First published in Great Britain in 2017 by Orchard Books"--title page verso. "Shay and Kai can't outrun the epidemic... can they survive it?" --cover. "First published in Great Britain in 2017 by The Watts Publishing Group" --Copyright page.