No one does murder quite like Ella Purnell. The “Yellowjackets” and “Fallout” actress next leads the upcoming Starz series “Sweetpea,” which is billed as a “deviously twisted coming-of-rage story.”

Purnell stars as Rhiannon, a quiet wallflower who develops a vengeful and intoxicatingly liberating taste for murder after her life is upended. She’s overlooked for a promotion at work, the guy she likes won’t commit, and her dad is sick.

So how does Rhiannon cope? Well, according to this first teaser, all it takes is a cathartic scream and blood on her hands to cleanse her anger. Nicôle Lecky, Jon Pointing, Calam Lynch, Leah Harvey, Jeremy Swift, and Dustin Demri-Burns co-star.

“Army of the Dead” alum Purnell returns to Starz after starring in another “sweet” series: The actress previously led the adaptation of Stephanie Danler’s novel “Sweetbitter” at the network back in 2018. Now, Purnell is both the lead...