Killing Mary Sue

Sierra McCormick stars as Mary Sue Harper in this action comedy thriller about a corrupt senator who hires assassins to kill his erratic stepdaughter, only for her to discover she's an untouchable killer after unwittingly dispatching multiple hitmen. As Bradley Weiner (Dermot Mulroney) tries to salvage their toxic relationship, Mary Sue breaks free from his control and joins forces with his wife Janine (Katie Killacky) to take him down.