Book four of the Secret Library series.
A friend once lost, a power now hungry, a soul that hangs in the balance.
Sometimes the hardest demons you have to face are the demons that lurk on the edge of your own memory. When an old friend offers Alex a quest, she finds that she has to make a difficult choice: to be open with her friends or to strike out on her own path.
There are whispers of something new in the shadows, something cold and ancient. Alex has strength now, strength unlike any she has had before, but will it be enough?
Step once more into the greatest library that ever there was and help restore balance back to the multiverse.
Available September 22