Searchlight Pictures unleashed the beast for the Adams-led feature, co-starring Zoë Chao, Scoot McNairy, and Mary Holland. Heller’s film is centered on Adams’ frustrated stay-at-home mom of a two-year-old, an artist who now fills her time chasing after her son, cleaning up after her son, and talking about her son with other parents. She’s asked how wonderful it is to be able to stay at home with him, and her husband (McNairy) even makes the mistake of saying he wishes he could be the one to stay home. Okay, bud, give it a try.

As you might have guessed from the title, Adams’ beleaguered mother starts to find herself changing in unexpected ways—a new stray hair, a sharpened canine tooth, an insatiable hunger. As her transformation into the title creature begins, so does the realization that as a mother, the creator and supporter of life, there is little separating her and other mothers from gods.

Heller adapted the script for Nightbitch from Rachel Yoder’s 2021 novel of the same name. The film will premiere at the Toronto Film Festival on Saturday. In Adams, it has a six-time Oscar nominee and one of the best actors of her generation.

Check out the trailer below. Nightbitch prowls into theaters in December.