Sinister is a great horror movie, which u can't define in one specific genre. It's more a small combination of a ghost, monster and serial killer movie, which makes it even more frightening. Ethan Hawke, who plays a crime writer, is really good in this movie and exudes credibility. This movie has a great line of sustaining tension, which deflates for a while and rises back up. It also has a few predictable jump scares, and even if it's predictable at times, it will scare you! Sinister is definitely a creepy and disturbing horror movie, which you should watch!
Synopsis - SPOILER ALERT
The Author Ellison Oswalt (Ethan Hawke), who is plagued by financial problems, moves with his family into a house where a whole family lost their lives in an unexplained way, which he did not tell his own family. Shortly after moving in, Ellison found a box in the attic full of mysterious films and a Super-8-Projector, which should help him for his researches for his new book about the crime that happened in this house before. The films include secret recordings of families with at least one child and how they are cruelly murdered, except for one of the child who always disappears. After Ellison found secret occult signs and a mysterious figure with a mask on every tape he asked a professor for help. He gets the information that the signs belong to a pagan cult that adores a demon named Bughuul (Nicholas King), who feeds on children's souls and ones you have seen Bughuul you can no longer escape from him...
The director of the movie is Scott Derrickson who is also known for Doctor Strange (2016) and The Day the Earth Stood Still (2008).