The filming for the upcoming X-Men spin-off The New Mutants (2018) has already been finished. Josh Boone has directed and co-written the movie. Principal photography began on July 10, 2017, in Boston, under the working title Growing Pains. Peter Deming served as cinematographer for the film. The majority of the film was shot on location at Medfield State Hospital, where Boone said “every single person on my crew … had weird things happen to them while they were there“. Boone wanted to create “as many of the effects practically as we could. It has some big visual effect stuff as well, but we really tried to do everything we could possibly do real so it would feel a little bit more like” the horror movies that he grew up with. For instance, to create the effect of figures pushing through the walls of a room, Boone used the technique originated by Wes Craven of having real actors pushing on sheets of spandex. 10 percent of the film was shot using green screen. Filming completed on September 16, 2017.
The New Mutants are a group of teenaged mutant superheroes-in-training appearing in American comic books published by Marvel Comics. They have been the main characters of three successive comic book series, which were spin-offs of the X-Men franchise. The first team of New Mutants characters was created by Chris Claremont and artist Bob McLeod.
In The New Mutants (2018), five young mutants, just discovering their abilities while held in a secret facility against their will, fight to escape their past sins and save themselves. The cast of characters is headed by Anya Taylor-Joy as Illyana Rasputin / Magik, Maisie Williams as Rahne Sinclair / Wolfsbane, Charlie Heaton as Sam Guthrie / Cannonball, Henry Zaga as Roberto da Costa / Sunspot, Blu Hunt as Danielle Moonstar / Mirage, Alice Braga as Cecilia Reyes and Happy Anderson as Reverend Craig Sinclair, the mean-spirited ecclesiastical fanatic father of Rahne, who taught her to believe her mutation is something evil.
You can find the first official teaser trailer of The New Mutants (2018) here:
