When a girl is raped on her way home, Jack tries to conceal his connection to the key witness in the case, Lucy. The 16-year-old has been living with him since he discovered that she is probably his daughter, and Charlie reluctantly agrees to keep his secret. However, it soon becomes clear that both girls are lying about that evening, and when more evidence emerges, Charlie cannot stay silent for much longer

Using improvised dialogue and filming techniques usually associated with factual programming, this unique procedural crime drama follows D.I. Martha Bellamy and her team as they investigate hard-hitting crimes in contemporary London.