The Transfiguration (2016)
Michael O'Shea's grounded debut uses vampirism as a lens for trauma and isolation. The film never says, and the ambiguity is the point.
Aaron Clifton Moten appeared in The Boxtrolls and has worked substantially in American television, including Fallout, where he plays a Brotherhood of Steel squire whose naivety the series uses carefully. He came from stage work in New York.