I'd heard that this movie was genuinely scary before I watched it. I ended up seeing it at the end of last week. I enjoyed the film, although I wouldn't describe it as scary as such - although maybe if I had seen it on my own or when in a different frame of mind that might have made a difference.
It's the story of a widow and her overactive son and her resulting chronic lack of sleep. Her failure to address her young son's behavioral issues finally leaves her at her wits end with his behavior becoming more pronounced. He believes he will be killed by monsters and invents weapons to kill them. At the start of the story his mum reads to him in bed. The next night she does the same but the chosen book is not one she recognizes, it is the Babadook. She suggests not reading anymore but her son begs and she gives in. The book unfortunately on serves to fuel her sons belief in monsters. Eventually, she decides to seek medical help. After this point, the film gets very dark. I was left not knowing whether events that followed really happened or whether it was all in the mother's mind.
The Babadook is a film I feel comfortable recommending to horror fans and thriller fans alike. However, I would suggest it's not for everyone. If you don't enjoy horror, don't watch.