The Fallout star’s serial killer drama gets a perfect Rotten Tomatoes score for being an “addictive” watch

Ella Purnell’s latest series is a far cry from her role as the smart and enthusiastic Lucy in Fallout. New serial killer drama Sweetpea sees its star as a wallflower with a killer secret.

She plays Rhiannon, who we meet at a low point. Overlooking a promotion at work, a love life in shambles, and a deteriorating family situation, she begins a running death list in her head, and it doesn’t take long for her dreams to become reality.