"Kill List" is a psychological horror thriller that combines elements of crime and folk horror. Its scares are not reliant on traditional jump scares; instead, the film builds tension through a disturbing atmosphere, character development, and unsettling themes. The horror emerges gradually, with a focus on the protagonist's descent into violence and madness. Viewers often find it deeply unsettling rather than outright terrifying, as it explores the dark aspects of human nature. Overall, its scariness lies in its psychological impact and ambiguity.

In "Kill List," the twist reveals that the protagonist, Jay, has been unwittingly involved in a cult and a series of ritualistic murders. As the film progresses, it becomes clear that the jobs he takes as a hitman are not just contracts but part of a sinister plot involving the cult's beliefs. The final scenes suggest that Jay is being initiated into the cult, culminating in a shocking and ambiguous ending that leaves viewers questioning the nature of reality and his own sanity, as well as the implications of his actions.

"Kill List" is not based on a true story; it is a fictional narrative created by writer and director Ben Wheatley. The film combines elements of psychological horror and crime thriller, following a hitman who takes on a new assignment that spirals into a disturbing and surreal experience. While it incorporates themes of violence, trauma, and mystery, the plot and characters are entirely the product of Wheatley's imagination.

As of my last update, "Kill List" is available for streaming on platforms like Amazon Prime Video and Hulu, but availability can vary by region. It's also often available for rental or purchase on services like iTunes, Google Play, and Vudu. For the most accurate and up-to-date information, I recommend checking your local streaming services directly or using a service like JustWatch to see where "Kill List" is currently available in your area.