Detective Ally Emerson wakes to a nightmare-bound, gagged, and imprisoned in a locked bedroom. The only other person with her is a young girl named Jane.

After taking time away at the coast to recover from the trauma of the John Peterson case, kidnapping was the last thing Emerson expected. Even more shocking is the identity of her captor: Annabel Arran, a journalist who has been persistently seeking information about Peterson. Until now, Arran had seemed nothing more than an overzealous reporter.

But this is no interview.

Confused and desperate for answers, Ally turns to the only ally she has-the child trapped with her. Yet the deeper she digs, the stranger things become. Who is the little girl really? How is she connected to Annabel Arran? And if Arran isn't simply a journalist, then who is she?

As the woman's behaviour grows increasingly volatile, Ally must piece together the truth before time runs out. Because Annabel Arran is hiding something-something tied directly to the legacy of John Peterson's crimes.

Meanwhile, back at the station, Snow, Benson, and Ziggy are searching for answers of their own. To survive, Ally will need more than her instincts. She will need the strength of the people waiting for her and the truth behind John Peterson's crimes may reach further than anyone imagined.

Find out what happens next in the latest Emerson and Snow thriller... Safe.