Dylan O'Brien 2017: New 'American Assassin' Posters Feature Unexpected SPOILERS, Mitch Rapp Kills Off Important Character? [PHOTOS]

Dylan O'Brien fans recently got excited over the new "American Assassin" posters which feature the "Maze Runner: The Death Cure" actor as well as Michael Keaton, Sanaa Lathan, Taylor Kitsch and Shiva Negar. However, some also noticed some interesting details in the posters that may have spoiled how the Michael Cuesta film will end. Who will Mitch Rapp kill in the exciting adaptation of the Vince Flynn novel?

Dylan O'Brien has already proven that he could lead an action adventure when he took on the role of Thomas in the "Maze Runner" film trilogy so there is little doubt that he will have no problem becoming a CIA black ops agent in "American Assassin". Fans already got a glimpse at Mitch Rapp in the movie's first trailer (via YouTube). The film's title already suggests that O'Brien will need to assassinate someone but could it also mean that an important character will meet their end sooner than expected?

One of the new "American Assassin" posters features Dylan O'Brien as Mitch Rapp with the line, "It takes one to kill one". There is little doubt that the line is referring to Taylor Kitsch's rogue agent who is getting ready "to betray one" (via Twitter).

Get. Ready. #AmericanAssassin pic.twitter.com/xquyuHgDTv

— Dylan O'Brien Things (@DylOBrienThings) May 15, 2017

It takes one to betray one. #TaylorKitsch #AmericanAssassin pic.twitter.com/3gOyQ48fSK — American Assassin (@VinceFlynnFilm) May 15, 2017

But is it possible that Taylor Kitsch will not be Dylan O'Brien's only victim in "American Assassin"? After all, the character posters suggest that all the major players in the film are all CIA agents who will not blink at the idea of killing a colleague. Could Mitch Rapp end up murdering Michael Keaton or Sanaa Lathan? Will he kill off Shiva Negar's mysterious character? The truth will finally be revealed when "American Assassin" premieres on September 15.