Exactly how far do you have to push a wallflower before she turns into a Venus flytrap? That’s the question at the center of Starz’s Sweetpea, the dark comedy starring Ella Purnel (Yellowjackets, Fallout) that premiered Thursday.

Sweetpea' star and executive producer Ella Purnell explained why depictions of female rage trend is an 'untapped' genre.

Adapted from the novel by C.J. Skuse, the drama stars the 'Yellowjackets' alum as a bullied and overlooked young woman who reaches a violent breaking point.

You don’t have to have seen the many trailers to guess that the Sweetpea in the title of Sky Atlantic’s new thriller Sweetpea isn’t all that sweet. In the opening scene of episode one, Rhiannon (Ella Purnell) reels off a list of all the people she’d like to kill.

While "Sweetpea" will be a streaming exclusive, Starz also has a linear TV channel. If you don't already have Starz on cable, you can pick it up as an add-on on several live TV streaming services, including Hulu, Sling TV, Fubo, YouTube TV, Philo, and DirecTV Stream.

Fallout' star Ella Purnell discusses how she became a producer for the Sky/Starz serial killer comedy 'Sweetpea' and developing her character.