Philomena 'Phil' McCarthy is a promising young officer in the London Metropolitan police. But everything changes when she is called to the scene of a domestic assault. Unbeknownst to her, the abuser is a decorated detective and Phil's efforts to protect his girlfriend - Tempe Brown - from violence result in Phil being unjustly struck from the force.
In the fallout, Phil begins to teach Tempe self-defence and they strike up a tentative friendship. Tempe is thoughtful and sweet, and within a matter of weeks the two women are inseparable - talking, socialising and confiding their deepest secrets in one another. But something isn't right.
Sinister things keep happening and, when a body is discovered, Phil realises that Tempe is hiding deadly secrets of her own. Secrets she is willing to kill for . .
