Dark Lurking, The

Something has gone terribly wrong at research station 320, a secret facility one mile beneath the earth's surface. All communications are gone, all means of escape destroyed and an extremely dangerous horde of rapidly mutating, flesh eating creatures are consuming everything in their path. Eight survivors of the outpost attempt to escape through thirteen levels of terror that will lead them to the surface. One of them is not who they seem to be, but darkness itself in human form.