This is a low-budget "Scream" style movie. "Maddy" is a new worker at a conspicuously-unnamed office, where she meets and starts a relationship with her co-worker "Chris". During a hot tub-party, Chris and his friends convince Maddy they belong to a "Murder Club" where everyone has killed someone for kicks. When Maddy loses it and kills someone for real, hijinks ensue.
The film looks good, and there are the requisites for this genre and budget level (nudity, gore, maybe a few cameos from slightly bigger stars than the cast), but, after the credits roll, you'll ask yourself why you spent 80 minutes of your life watching it.