Based on a true story: In 1992 former model Rachel Nickell was sexually assaulted and brutally murdered in broad daylight. The only witness: her little son. The police, under extreme pressure, produce a suspect with the help of a forensic psychologist. But to convict him, a female officer has to set herself up as bait for his sexual obsessions. A brilliantly acted and directed reworking of the many moral pitfalls this spectacular case and its investigation have opened up.