Eve's mission is disastrously compromised. Carolyn briefs Eve on her current status as an employee of the British government and leaves Eve's future in her own hands. Villanelle does everything she can in order to get to her ultimate target.

Villanelle dives deep into the dangerous world of her target under the guise of her newfound persona, Billie. Eve may have worrying competition for Villanelle's affections.

Eve is reeling from her act of violence against Villanelle and doesn't know whether she is alive or dead. A paranoid and severely injured Villanelle manages to get herself to the hospital for treatment. Carolyn approaches Eve with an intriguing opportunity.

Villanelle decides to take matters into her own hands on a trip to Amsterdam. Carolyn is called in to face the music with her boss. After the discovery of another dead body, Eve and her new team make a break in their case.

The MI6 team make a pact with the devil in order to get information from The Ghost. A visitor from Broadmoor comes with a dire warning, while Eve and Villanelle find themselves closer than ever.

The point of no return: Villanelle uses her unrivaled infiltration skills to immerse herself in the world of a new target. Their relationship on the rocks, Eve and Niko confront each other about their future.

Carolyn introduces Eve to her new team before Eve briefs them on the Villanelle case. Villanelle, needing to lie low while she recovers, finds a good Samaritan to take her in and care for her.

Villanelle's new circumstances are looking bleak, while Eve makes a dangerous deal with an old acquaintance. Villanelle is surprised when she is approached by a figure from her past.