Pretty Little Liars Star Sasha Pieterse Uncovers The Kennedys’ Most Haunting Chapter In Psychological Thriller Rosemary
Pretty Little Liars alum Sasha Pieterse takes on Rosemary Kennedy in Rosemary, a psychological thriller that probes one of the Kennedy family’s darkest chapters.
Another chapter of Kennedy family lore is heading for the screen, and this one leans into the unsettling. A new psychological thriller called 'Rosemary' is taking on the life of Rosemary Kennedy — the sister whose fate was shaped by a controversial medical decision and then kept largely out of public view for decades. Sasha Pieterse is stepping into the role, and the project sounds like it wants to look past the myth and into the person.
Sasha Pieterse will play Rosemary Kennedy
- Title: 'Rosemary'
- Genre: Psychological thriller
- Lead: Sasha Pieterse (Pretty Little Liars), age 30
- Subject: Rosemary Kennedy, the third child of Joseph P. Kennedy Sr. and Rose Kennedy
- Angle: Centers on a woman whose life was irrevocably changed by a controversial medical decision, and whose story the family kept private for years
Why this story matters
The Kennedys are basically American political shorthand for power and tragedy, and Rosemary’s story is one of the family’s most painful chapters. For a long time, the public got scattered pieces instead of a full picture. That is exactly what Pieterse says drew her in — the chance to play a real person, not a footnote.
'Rosemary's story has been told in fragments,' Pieterse told Deadline. 'What drew me to this project is how it explores her as a person, not a symbol, but a fully realized human being with dreams and vulnerabilities.'
It’s a heavy subject to tackle as a thriller, so the tone will matter a lot here. But if the film actually centers Rosemary as a complex, everyday human — not just a cautionary tale attached to a famous last name — that is a story worth telling.