The Secret (Hemligheten) (2005) Trailer
Four students travel to Scandinavia for the time of their lives. During a field trip on an island, the group finds a strange amulet, the carrier of which becomes possessed by an unimaginably evil force. The amulet is connected to the Vatican, who deploys their own "investigators" to track it down. When the tourists attempt to escape, they're thwarted at every turn, and what was to be a vacation turns out to be an inferno of blood, death, and destruction.