: Revealed to have hacked Alison's hearing aids to listen in on her private conversations with the police, showing he is far more suspicious and technologically savvy than he lets on.
: Mild (a scene involving Alison and Liam in bed). [S1E4] Code of Silence
The episode carries a or 15 rating. According to the IMDb Parents Guide , content includes: : Revealed to have hacked Alison's hearing aids
: Moderate (frequent use of "F-words" and other strong language). [S1E4] Code of Silence
In Season 1, Episode 4 of the 2025 British crime drama , the narrative shifts toward high-stakes undercover work as the central character, Alison, is drawn deeper into the criminal world she was hired to observe. Plot Summary