Fallout star Ella Purnell has joined the cast of Craig Roberts’ comedy-horror The Scurry, according to Screen Daily.

“Purnell will play a leading role, of a park attendant who must use her unique skills and strength to survive a band of killer squirrels.” She joins previously announced cast members Rhys Ifans (Spider-Man: No Way Home), Paapa Essiedu (Men), and Antonia Thomas (“The Good Doctor”). Tim Telling wrote the film’s screenplay.

True Brit Entertainment is co-producer and UK distributor on the film, which is shooting on location and at Dragon Studios in South Wales.

Producers are James Swarbrick for Water & Power and Adrian Bate for Cliff Edge. Executive producers are Tom Miller and Sam Myer for Water & Power, Roberts for Cliff Edge, Zygi Kamasa for True Brit, James Spring and James Scott for Circus Studios and Joe Simpson and Simon Williams for Ashland Hill.

The film “follows two pest controllers called to a country park café to investigate a routine vermin problem, only for an avalanche of deranged squirrels to descend at nightfall, wreaking mayhem on the staff and visitors in the park.”

The film is currently filming in the UK.