The most feted horror film of the year, The Babadook is an exercise in psychological horror that mixes elements from Roman Polanski’s Repulsion and Stanley Kubrick’s The Shining. Delving into the fraying emotional states of a woman and her special-needs son, director Jennifer Kent spins a harrowing yarn about the terror that accompanies the pleasures of motherhood — the fear that you will be unable to do enough, to muster all the spirit and goodheartedness that are required, to care for your child.