The Fantastic Four’s oldest enemy appears – and asks for their help! The Mole Man and the FF descend into the Earth to find the lost city of the High Evolutionary!
Also: classic 1960s action! The Mad Thinker’s deadly android attacks – and the Invisible Girl must battle him alone!
Includes material reprinted from Fantastic Four #575-576 and Fantastic Four #71.
— Description from Comic Vine community (comicvine.gamespot.com).
