Critics from sites like Den of Geek highlight Annabelle Wallis's performance as she balances being an ethereal beauty and a calculating police informant.

Tommy takes Grace to the Cheltenham races to get closer to Billy Kimber, warning him of a planned robbery by the rival Lee family. This move secures the Peaky Blinders a role as Kimber's security, gaining them a foothold in the racecourse racket.

This episode sees Thomas Shelby further cementing his strategic prowess by navigating dangerous alliances with the IRA and the formidable Billy Kimber.

Ada Shelby and Freddie Thorne's secret marriage causes a massive headache for Tommy, who is pressured by the police to deliver Freddie for sedition.

IRA sympathizers approach Tommy about the stolen BSA guns. Grace inadvertently kills one of these men after following them, sparking tension that the IRA eventually blames on the Peaky Blinders.

The episode provides a devastating look at Tommy's PTSD through vivid nightmares of his time as a tunneler in France, explaining his reliance on opium and his detached demeanor. Character Spotlight: Grace Burgess