File:Avengers Vol 1 115 001.jpg

Description
The Avengers fly to Great Britain in search of the missing Black Knight, but find his castle surrounded by an invisible mystic barrier, which Mantis's empathy with nature determines to have been erected by Dr. Strange. The team is then suddenly attacked by the Troglodytes, a force of sub-humans dwelling in underground caves, whose gas attack knocks all the heroes unconscious. Captured, they learn that their foes originated in the Middle Ages, when oppressed peasants fled underground, then inbred over the centuries until they devolved to their present forms. Believing the Avengers responsible for the barrier preventing them from raiding the castle, the Troglodytes sentence the intruders to death by a monstrous insectoid creature, but Thor. Mantis, and the Vision free themselves and defeat iL Finally, the Black Panther's enhanced night-vision enables him to outfight the Troglodytes in the darkness, ending the battle. With the sub-humans being aided by British medical personnel, the Avengers depart. Meanwhile, unknown to all. Loki. blinded in his most recent clash with Thor, has been rescued by Dormammu, whose ally he becomes in a plot to conquer the Earth.