Rupert Grint plays a father raising a demonic child in the Nightborn trailer. The upcoming fantasy horror film is directed by Finnish filmmaker Hanna Bergholm, best known for her body-horror film Hatching.

The official synopsis of Nightborn reads, “With dreams of starting a perfect family, Saga and her British husband Jon move to the isolated house where she spent much of her childhood, deep in the Finnish forest. But as soon as their baby is born, despite the reassurance of all around her, Saga knows there’s something terribly wrong with her son. As their marriage starts to crack, Jon struggles to support his wife, but only Saga suspects the terrible truth about her newborn.”

Check out the Nightborn trailer below (watch more trailers):

What do we see in the Nightborn trailer?

The Nightborn trailer begins with Jon and Saga moving to an isolated house in the Finnish forests. They decide to expand their family after the move, and soon after, they’re shown as parents with a newborn. However, things quickly take an unexpected turn, as everything seems to be wrong with their child. Right from its appearance to its unquenchable hunger for Saga’s blood. The rest of the trailer follows Jon and Saga as they deal with their seemingly demonic child.

Rupert Grint, best known for playing Ronald Weasley in the Harry Potter films, will be seen as Jon, while Seidi Haarla, known for her role in Compartment No. 6, plays his wife, Saga. Other key cast members include Pamela Tola, Pirkko Saisio, Rebecca Lacey, and John Thomson.

Image Credit: Shudder

Nightborn had its world premiere at the 76th Berlin International Film Festival in the Main Competition Section in February. The film has mostly earned positive reviews and currently holds a 70% rating on Rotten Tomatoes.

Nightborn will be available for streaming on Shudder from July 31, 2026.