Maverick Film has released the first official Speed Demon trailer, previewing the upcoming horror movie starring Katie Cassidy and William H. Macy. Speed Demon will be released in select United States theaters, as well as On Demand and through digital platforms, on May 31, 2026.
“When Father Novak and Sister Lu board a train from Montreal to New York City, they weren’t prepared for the danger and evil that would pursue them. After the train is taken over by the demon Asmodeus, Father Novak and Sister Lu must battle possessed passengers on a runaway train with Sister Lu forced to overcome her faltering faith and perform the first exorcism done by a nun,” reads the film’s official synopsis.
Check out the new Speed Demon trailer below (watch other trailers):
What happens in the Speed Demon trailer?
The trailer sees both Father Novak (Macy) and Sister Lu (Cassidy) taking a train to New York City. Lu, a nun who struggles with substance issues, is looking for one last chance. Meanwhile, the train they are on becomes possessed by Asmodeus, the “king of demons,” and the pair must not only exorcise those afflicted, but save the passengers on the train in the process.
Speed Demon is directed by Jon Keeyes, from a script written by Domenico Salvaggio. Keeyes recently directed 2024’s The Clean Up Crew, which stars Jonathan Rhys Meyers, Antonio Banderas, and more. Some of the other films he’s helmed in the past include 2017’s The Harrowing, 2021’s Rogue Hostage, 2021’s The Survivalist, 2022’s Code Name Banshee, 2024’s Cult Killer, and more, while he was also a producer on the 2025 action flick Guns Up with Kevin James, Christina Ricci, and Luis Guzmán.
In addition to the Black Canary role, Cassidy is known for starring in shows like Supernatural and Gossip Girl; she’s also been in movies such as 2006’s Black Christmas, 2010’s A Nightmare on Elm Street, and other titles. Macy received a Best Supporting Actor Academy Award nomination for his performance in 1997’s Fargo, and he just recently appeared in the Oscar-nominated film Train Dreams.