The story follows Ellison Oswalt (Ethan Hawke), a true-crime writer who moves his family into a new home with the hopes of finding inspiration for his next book. While unpacking in the attic, Ellison discovers a box of old home movies that depict several families being murdered in a series of disturbing and brutal ways. As he begins to investigate the connection between these films and the previous occupants of the house, he uncovers a sinister and supernatural force that is linked to the murders.

The deeper Ellison digs into the mystery, the more he becomes entangled in a terrifying and malevolent presence that seems to have a particular interest in his own family. As the supernatural events escalate and the line between reality and horror blurs, Ellison must confront the dark forces that threaten to consume him and his loved ones.

Sinister is notable for its effective use of atmosphere and tension, as well as its disturbing imagery and unsettling plot. The film explores themes of obsession, the supernatural, and the consequences of uncovering dark secrets. The unsettling tone is enhanced by its use of found footage-style home movies, which contribute to the sense of dread and realism.

The film received generally positive reviews from critics, who praised its ability to create genuine scares and its effective use of horror tropes. Ethan Hawke’s performance was also noted for adding depth to the character’s descent into obsession and terror. Sinister has become a standout entry in the modern horror genre, known for its ability to deliver both psychological and supernatural horror in equal measure.