A tense and claustrophobic nightmare, this cult-classic is widely considered one of the best horror films of the 21st century. Written and directed by Neil Marshall, the director of Dog Soldiers and Hellbo y, as well as episodes of Game of Thrones, Westworld and Hannibal . Scream your last breath. After a tragic accident, six friends reunite for a caving expedition. Their adventure soon goes horribly wrong when a collapse traps them deep underground and they find themselves pursued by bloodthirsty creatures. As their friendships deteriorate, they find themselves in a desperate struggle to survive the creatures and each other.