There’s nothing soothing about Oona Chaplin’s next project…

The 33-year-old part-Chilean actress has been tapped to star in Lullaby, a horror feature from Alcon Entertainment. 

John R. Leonetti, who has directed films in the same genre like Annabelle, Wish Upon, and most recently the Netflix original The Silence, has signed on to direct Lullaby, which will begin production in Toronto next month.

Based on the mythological figure Lilith, the film is rooted in folklore and follows a new mother who discovers a lullaby in an ancient book and soon regards the song as a blessing. But her world transforms into a nightmare when the lullaby (“Lilith-Abi” Hebrew for “Lilith, begone”) brings forth the ancient demon Lilith.

Chaplin, the granddaughter of Charlie Chaplin, has previously appeared on HBO’s Game of Thrones, BBC’s The Crimson Fieldand Taboo.

She’s set to appear in the forthcoming Avatar sequels.