Detective Constable Maggie Glass's life ended and began at the age of eight, her memories before that time held captive in the deep recesses of her mind.

When Maggie responds to the scene of a gruesome murder on the Esplanade of Edinburgh Castle, the image of a woman burning at the stake bursts into Maggie's consciousness, and she can no longer ignore the trauma she suffered on that fateful night eighteen years ago.

With the details of this murder matching so closely to the murders Maggie witnessed as a child, are the answers to solving the crimes locked away in Maggie's brain? Will unlocking her suppressed memories destroy Maggie? Or fuel her desire for justice?