Distraught, confused, and half-wild with fear, Sarah Carter emerges alone from the Appalachian cave system where she encountered unspeakable terrors....
When an eccentric stranger promises to cure his claustrophobia, a sceptical man agrees to her treatment, only to discover that escaping his fear may...
Five strangers face the unthinkable when they wake up and find themselves trapped. With no idea how they got there they frantically try to figure out...