Bad Apples (2018) on Netflix

Plot summary

On Halloween night, two teenage girls in dark clothes and homemade, eerie masks head out for the evening in a suburban cul-de-sac. They seem calm, but they intend violence. They force their way into a house where a woman in the late stages of pregnancy is on her own, and the attack is brutal from the start. Then they roam the neighborhood. The one house on the street not marking the holiday belongs to Ella and Robert, a married couple who have just moved there from California. The couple is still settling into their new home, and the girls turn their attention to that house.