The Little Things (2015)

Beautiful young serial killer Sam (Sally Cacic) has one agenda: rid the world of really, really rude people. Sam loves her job, and she's always finding inventive new ways to plan and execute each kill. While she's certain that she's doing the world a service, her new boyfriend (unaware of her true occupation) makes her start to question whether or not her targets truly deserve to die. Will Sam turn over a new leaf, or will her boyfriend turn out to have the same fatal flaws as her victims?