Detective Doyle is looking for a serial killer in Soho, London. As he slowly unpicks the CCTV and evidence, he starts to focus in on a woman. This woman, who works in the sex industry, becomes a figure for Doyle's obsession. He soon finds himself not only intoxicated by alcohol, but visions of this woman, who is clearly the next victim of the killer's list. Doyle winds his way into her world, and begins a journey to save her from the horrors of trafficking and prostitution, all the while conscious that the killer is not far away.