: Under an alias, Liam has Alison lip-read conversations of the wealthy Joshi family, who are preparing to sell a valuable necklace. This confirms the gang's target: the Croesus International Vaults .
: Faced with mounting pressure, she deletes police messages to protect her time with Liam, though she eventually warns the police about Liam's surveillance of the Joshis. [S1E4] Code of Silence
Note: There is also a 2017 series titled with an episode of the same name (S1E4), which focuses on a hair show and the aftermath of Otis's death. Code of Silence S1 E4 - Drama - BritBox : Under an alias, Liam has Alison lip-read