Elena Felton

Elena Felton works alongside Eve Polastri on the unglamorous end of British intelligence, buried in paperwork and office politics rather than field glamour. She's Eve's closest friend and confidante, sharp-tongued and irreverent, the one who notices when Eve's fixation on a mysterious assassin starts pulling her away from ordinary life.

Howell-Baptiste brings warmth and comic timing to what could be a thankless best-friend role, making Elena feel like a real person with her own dry wit rather than a sounding board for Eve's obsessions. She grounds the show's darker turns with genuine affection, so her scenes register as respite rather than filler.