Jo rushes to Sofia when Sonny is stabbed in prison. While keeping vigil at his bedside, she gets caught up in a second attempt on Sonny's life and struggles to accept Cormac's claims of non-involvement. Having enlisted the help of his former police partner, Shana, Dom is told that the Met have zero intel on Cormac. Dom deduces that he must be a small-time bully with no real connections, but then witnesses Cormac murdering a man on the street. Meanwhile, Jo returns home to a surprise visitor who delivers some shocking news. 

After stealing the heroin and money, Jo realises Cormac is also being blackmailed, so they collude to get out for good. Smuggling more heroin, they sell it on, while Cormac puts things in place for Jo's escape. Kayla gives birth, and Shana reveals to Dom that Cormac's boss is Anton Marquis - a senior police officer.