Question: Who played the main characters in Tomas Alfredson's 2008 vampire film?
Sentence (from "Tomas Alfredson"): Hans Christian Tomas Alfredson (born 1 April 1965) is a Swedish film director who is best known internationally for directing the 2008 vampire film "Let the Right One In" and 2011 espionage film "Tinker Tailor Soldier Spy".
Relevant evidence: Yes