Sky and Starz have dropped the trailer for their Ella Purnell-headlined serial-killer series Sweetpea, which stars the Yellowjackets actor as am overlooked wallflower who develops a taste for murder.

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.