Negotiations commenced immediately after the film's first market screenings in Berlin earlier in the month on the story of a 12-year-old boy's friendship with a vampire girl. The story is based on Swedish author John Ajvide Lindqvist's bestseller.
Magnolia's senior vice president Tom Quinn said Let The Right One In would stand out in any market or festival and added: 'What Bong Joon Ho's The Host did for monsters, Tomas Alfredson's Let The Right One In will do for vampires.'
'The cross-over potential is immense and I am very glad that Magnolia sees it the same way,' Bavaria's head of sales Stephanie Zeitler said.
Zeitler and Bavaria's Thorsten Schaumann and Bianca Schartl brokered the deal with Quinn and Magnolia's head of business affairs Jason Janego.
Carl Molinder and John Nordling at EFTI produced in association with Sandrew Metronome, Filmpool Nord, Sveriges Television, and WAG.
Further deals on the film are expected soon in the UK, Germany, Spain, South Korea and Latin America and Bavaria reported strong interest in Japan, France, Italy and Australia.