One minute your daughter is all party dresses and popcorn, the next she’s a bloody monster. Many stories have been told about mothers helping their child through their first period and into young adulthood, and the animated comedy Little Demon (Disney+) begins by following the usual script. Single mother Laura drops 13-year-old Chrissy off for her first day at Middletown junior high, Delaware. While nervously making friends with a boy in the corridor, Chrissy feels an unfamiliar sensation, runs in embarrassment to the toilet and finds blood.

Then, however, Chrissy descends into a trance-like rage and murders two school bullies, ripping off their heads and plastering the walls with their viscera. Having hastily picked Chrissy up in the car, her mum explains: “Your vagina just became a homing device for the Prince of Darkness.”