HelpMe.net, the viral website for Cloverfield director Matt Reeves' vampire romance/thriller Let Me In, has been updated with four riddles that, when solved, unlock five unnerving photos from the upcoming film.

An adaptation of the bestselling Swedish novel Let the Right One In by John Ajvide Lindqvist and the acclaimed film of the same name, Let Me In is a coming-of-age tale about an alienated 12-year-old who befriends a mysterious young newcomer in his small New Mexico town. The movie, which stars Chloe Moretz (Kick-Ass), Kodi Smit-McPhee (The Road), Elias Koteas (Shutter Island) and Richard Jenkins (The Visitor), will have its U.S. premiere on Sept. 23 at Fantastic Fest in Austin, Texas, before opening nationwide on Oct. 1.