In this gritty German-made shocker, four young friends decide to take a daring trek through Berlin's labyrinth of underground tunnels. A terrible accident brings them into contact with a stranger who comes out of nowhere and appears to offer his assistance, but is instead luring them into a new maze...of depraved terror! Nathalie Kelley, Nick Eversman star. AKA: "Urban Explorer." 93 min. Widescreen (Enhanced); Soundtrack: English and German; Subtitles: English. In English and German with English subtitles.