Mark Kelly might be best known to mainstream audiences for his role in AMC’s *Fear The Walking Dead*, but home video collectors know him for a standout performance in a modern horror sleeper. His turn as the unhinged, manipulative teacher Mr. Butler in the 2017 high-school thriller *Dismissed* has garnered significant attention from genre fans. This independent gem, distributed by Dark Sky Films, has become a cult favorite, with Kelly’s chilling portrayal being a key reason for its appeal. *Dismissed* remains his most collectible work, frequently sought after on Blu-ray for its intense atmosphere and Kelly's unforgettable villain. While his extensive stage career, including roles like ‘Han Solo’ in *The Star Wars Trilogy in 30 Minutes*, highlights his versatility, it’s his unsettling presence on screen that has truly resonated with physical media enthusiasts who appreciate compelling, character-driven horror. His limited but impactful filmography ensures that any new release featuring Mark Kelly is likely to be on a collector’s radar.