Dir. Tomas Alfredson. 2008, 115 mins. With Kåre Hedebrant, Lina Leandersson, Per Ragner. A tonally perfect coming-of-age revenge story, Let the Right One In extended the vampire genre beyond horror into subtle social analysis. Recently remade as Let Me In, Alfredson’s film won recognition of its heartfelt depiction of adolescent pain and isolation.