The fifth episode of Season 6, titled " The Road to Hell ," serves as the explosive penultimate installment of the series. In the wake of personal tragedy and a terminal diagnosis, Tommy Shelby shifts from grieving to a singular, relentless focus on his final "secret strategy". Key Plot Developments
: The long-standing mystery of the "Black Cat" is finally resolved. Billy Grade is revealed as the informant who betrayed Tommy's plan to assassinate Oswald Mosley in the Season 5 finale. [S6E5] The Road to Hell
The episode features the primary ensemble as the series moves toward its conclusion: as Thomas Shelby Paul Anderson as Arthur Shelby Natasha O'Keeffe as Lizzie Stark Sam Claflin as Oswald Mosley Conrad Khan as Duke Shelby Stephen Graham as Hayden Stagg The fifth episode of Season 6, titled "
: Tommy begins severing ties with the underworld to protect his legacy. He uses a bomb to intimidate Chinese opium dealers into closing shop and visits Liverpool to strike a deal with union convenor Hayden Stagg . Billy Grade is revealed as the informant who