Detective Kieran Temple is woken by a 4am phone call. Not unusual, except that this call is from his ex-partner, Mia Burrows. And she's just killed her boyfriend.

As Temple is compelled to investigate the death, he must do so behind the backs of his superiors and his wife. All evidence supports Mia's claims, that she was defending herself against a maniac. But as he delves deeper, Temple learns of a complex and dysfunctional relationship, one that's been manipulated from the start.

While carrying out this unsanctioned and disturbing investigation, Temple's renewed contact with Mia also forces old feelings to resurface, feelings that once nearly cost him his marriage and his career. And with his gut telling him that Mia's boyfriend was not the brute he's being made out to be, Temple is determined to get answers while everyone - including Mia herself - just want it left alone.