She alone remembers what happened. Now, Aaron, her hard-won friend – and maybe more – is an enemy, trying to kill her. And Nick, the boy she loved, is a stranger who doesn’t even know her name. Only Joan remembers that a greater and more dangerous enemy is still out there.

When a deadly attack forces Joan back into the monster world, she finds herself on the run with Nick – as Aaron closes in.

Torn between love and family and monstrous choices, Joan must find a way to re-gather her old allies to face down the deadliest of enemies, and to save the timeline itself.