Killing Mary Sue

A corrupt senator plots to kill his stepdaughter to remove her as a liability in his life. Although she appears unstable and exhausted, the young woman unexpectedly discovers she possesses an innate ability to survive and act as a lethal killer.

Released in 2025, Killing Mary Sue is an American action comedy thriller written and directed by James Sunshine. The film stars Sierra McCormick in the title role, with Dermot Mulroney playing Bradley Weiner. The supporting cast includes Sean Patrick Flanery, Jason Mewes, Martin Kove, and Kym Whitley, with a total of 62 credited performers. The project was produced by Morningstar Films and Arck Entertainment.

The movie has received mixed reactions from viewers. On IMDb, it holds a rating of 5.1/10 based on 906 votes, while on TMDB, it has a slightly higher score of 6/10 from 20 votes.