Remember Redfield (2018)

And You Thought Your High School Reunion Sucked...

Old loves, rivalries and vendettas resurface at a high-school reunion party held out on a reclusive estate, but the evening takes a deadly turn when one of the guests begins systematically killing all the estranged attendants, leaving the group to try and decipher who, of all their friends, has the potential to be a murderer.