The Devil You Know: To catch a killer, she must think like one

Up until yesterday I knew who I was.
Up until yesterday my life wasn't a lie.

Rosa Fisher is the smart girl, the good girl. At twenty-five and mid-way through a PhD in the psychology of fraud, she thinks she has herself all figured out. Until that night, when the house is dark and she is all alone, and she hears an intruder on the stairs.

But the intruder isn't looking for Rosa Fisher. He's after someone else. And everything Rosa has ever known about her world is about to be turned upside down.

Determined to find out who she really is, Rosa traces her origins back to a small Canadian town, to a fire in a barn and a devastating family tragedy. Which forces her to question - if she can lie with such ease, was she ever really the good girl after all?