Hybrid (2018)

A teenage girl, already leery of her mother's mysterious new suitor, becomes convinced that he literally is not what he appears to be. This only worsens as bizarre and frightening visions and events begin to plague her. With no one around her except a paranoid acquaintance to believe anything she says, it becomes chillingly clear she'll have to face down a homicidal psychopath alone, determined to keep his secret by any means necessary.