A murder takes place in a small town. As the story progresses, entangled in the lies and crime, community members start to show their true colors.
In both movies the plot focuses on a female main character who's trying to escape from a stalker/killer. They're quite dark and have some bloody scenes.
Both have very similar concepts. Participants have to survive in a series of deadly games. Both include gory scenes.
Both are thrillers about home invasion, kidnapping and finding the killer. They have similar creepy vibe and built up tension.