The six-episode British revenge thriller follows Rhiannon Lewis ( Purnell ), a quiet wallflower that everyone overlooks, who develops a vengeful taste for murder. “At its core, the series is about a woman finally finding her voice, told through a uniquely dark and comedic lens,” per the logline.

Ella Purnell has been on a roll over the past year. After her breakout in Yellowjackets, the actress voiced a character in an episode of the superhero show Invincible and made her debut as Lucy MacLean in the live-action adaptation of the post-apocalyptic game Fallout.