Can a psychopath ever change her spots? That’s the question at the heart of the final series of the BBC’s Killing Eve. Assassin Villanelle (Jodie Comer) and MI6 operative Eve (Sandra Oh) remain alive and kicking, despite their many attempts on each other’s lives.

Yet, at the end of series 3, the pair had an unusually honest conversation on Tower Bridge. “I think my monster encouarges your monster,” Villanelle said. “I think I wanted it to,” Eve responded. As they attempted to walk away from one another for good (with tears in their eyes), they couldn’t help but turn back around for one last look.
 

Villanelle appears to have changed, but the unlikely duo’s game of cat and mouse is perhaps better likened to the fable of the scorpion and the frog. They discuss it in the series 4 trailer –  the scorpion promises to get the frog safely across the water without stinging him. Yet, they end up both drowning when the scorpion goes back on his word. It’s just in his nature to sting.

Whether Eve, Villanelle, or both get stung remains to be seen, but we know we can expect more sizzling chemistry between the two. Carolyn (Fiona Shaw), Konstantin (Kim Bodnia), Carolyn’s daughter Geraldine (Gemma Whelan) and Hélène (Camille Cottin) also all return.

Robert Gilbert (The Tragedy of Macbeth) joins the cast as Yusuf, who is ex-army, to help Eve, and Anjana Vasan (We Are Lady Parts) plays Pam, a new assassin-in-training. In the trailer, it also looks like Villanelle has a therapist (?!), played by Adeel Akhtar (Back To Life), or perhaps he’s just someone to confide in about her two latest kills.

Sex Education writer Laura Neal has penned the latest series, following in the foosteps of Phoebe Waller-Bridge (who is still an executive producer), Emerald Fennell and Suzanne Heathcote.

Killing Eve is known for its macabre, out-there sense of humour, unparalleled wardrobe, witty one-liners and gruesome murders. Ahead of the final series coming to BBC One, take a look back at all its killer moments…

When is the BBC’s Killing Eve on TV?

Stream Killing Eve series 4 in Apps & Games > BBC iPlayer on Monday 28 February, ahead of the TV broadcast. Series 1-3 are streaming now.