In 3 Tagen bist du tot

The name of this movie is In 3 Tagen bist du tot released in 2006-07-21 and it's main theme is When Nina and her high school friends receive eerie text messages declaring that they will all die within three days, they dismiss it as a hokey prank -- until one by one, the pals start turning up dead in the alpine countryside. With the cops stymied, Nina and her remaining friends must scour their past for clues to identify the madman before he kills them all..