Described as a “deviously twisted coming-of-rage story,” the highly anticipated STARZ series Sweetpea is set to premiere this October, and the official teaser trailer has just been released.

Ella Purnell, known for her roles in Yellowjackets, Fallout, and Sweetbitter, stars as Rhiannon, a once-quiet wallflower who discovers a dangerously liberating taste for murder.

In Sweetpea, Rhiannon Lewis is largely unnoticed—people pass her by on the street, she’s repeatedly passed over for work promotions, her romantic interests are uncommitted, and her father’s health is deteriorating. Her world is upended when she reaches a breaking point, unleashing a transformation from wallflower to a woman capable of anything. As Rhiannon embraces her newfound, intoxicating power, she must navigate the challenges of keeping her murderous secret hidden.

The series features an ensemble cast including Nicôle Lecky (Mood, Sense8) as Julia, Jon Pointing (Big Boys, Smothered) as Craig, Calam Lynch (Bridgerton) as AJ, Leah Harvey (Foundation) as Marina, Jeremy Swift (Ted Lasso) as Norman, and Dustin Demri-Burns (Slow Horses) as Jeff.

Ella Purnell also serves as an executive producer on the show. She shared her excitement in a statement: “I truly cannot wait for the world to meet Sweetpea! Exploring this incredibly complex character and working with our dynamic cast and talented team, including Ella Jones, Kristie Swain, and Patrick Walters, has been one of the most fulfilling experiences of my career. At its core, the series is about a woman finding her voice through a uniquely dark and comedic lens. I hope audiences enjoy Rhiannon Lewis’ wild journey as much as we enjoyed bringing it to life.”

The six-part series, adapted from C.J. Skuse’s cult novel, is produced by See-Saw Films and Fanboy in association with Sky Studios. Executive Producer Kirstie Swain (Pure) adapted the novel, co-writing the series with Krissie Ducker (Killing Eve), Laura Jayne Tunbridge, and Selina Lim (Sex Education, Hanna). The series is directed by award-winning director Ella Jones (The Baby, Back to Life), who also serves as an executive producer.

Sweetpea will debut in October 2024 as a STARZ original in the U.S. and Canada.