Warlord of Mars #31

(W) Arvid Nelson (A) Leandro Oliveira (CA) Joe Jusko, Lucio Parrillo. The Red Planet is a world of secrets, but Martians lack the innate curiosity of Earthlings. Why? Because on Mars, the past can come back to haunt you - literally! When John Carter discovers the inner workings of a mysterious tower over his capital, he unleashes an ancient evil that could lay waste to his empire!