Amelia is a single mother trying to raise her troubled seven-year-old son, Samuel. He's convinced there's a monster lurking in his house and he's created an assortment of weapons, including a small catapult that straps to his back, to combat creature. Of course, his mother doesn't believe him- until she comes across a strange pop-up book, "Mr Babadook". It's about a monster that comes for children. The book creeps her out so much she rips it up, only to find it put back together and on her doorstep. And it has additional pages, which show her killing the family dog and murdering her child and herself. She burns it. Then the kid starts getting more out of control, pushing his cousin out of a tree house and breaking her arm, then having tantrums-and even seizures. Amelia, unable to cope with him, gets tranquilizers from the doctor. It's a mistake because it allows the Babadook to inhabit her--and it's at this point where her personality completely changes.
THE BABADOOK is a surprisingly creepy movie with plenty of scares. Yes, it's sort of like Freddy Krueger from A NIGHTMARE ON ELM STREET, but the creature does stand on its own. Highly recommended.