Psycho In-Law (2017)

It’s been two years since Tina’s husband-to-be, Brock, lost his first wife in a tragic accident. Tina’s only obstacle is Joyce, Brock’s former mother-in-law, who is determined to stop the marriage. Joyce’s attempts to disrupt the happy couple escalate until Joyce commits one murder and plans that Tina herself is next–even if it must happen at her wedding.