With Judith in life-threatening peril, Debbie and Billy must decide what to do next. A lifeline from Sam provides Judith with terrifying information, and secrets about her past are revealed. Queenie confronts The Director, Jacques offers Debbie a deal, and Sam and Queenie take matters into their own hands and embark on a dangerous mission.

Back in London, Judith and Debbie's friendship seems beyond repair. Queenie learns a shocking truth, Sam deals with the fallout of his actions, and the Director takes Judith back into the fold. As the final piece of Ana's plan falls into place, Debbie and Judith hurtle towards a spectacular season finale.