The darkhold

"The Darkhold sees Doctor Doom unearth the ancient Darkhold, a text written by the elder god Chthon, and unintentionally opening a passageway for Chthon to return to our dimension. To stop him, the Scarlet Witch recruits five heroes--Iron Man, Wasp (Janet), Black Bolt, Spider-Man (Peter), and Blade. To enter Chthon's dimension and fight him, the heroes must read from the Darkhold, which drives them insane."--From publisher.