"When Fall The Mighty"
Reed and Johnny go to infiltrate the lair of the Mad Thinker in order to stop the Thinker and rescue the real Dr. Santini but they run into traps but Reed and Johnny manage to defeat the Thinker and rescue the Doctor. Meanwhile, Ben continues to search for Reed in an effort to kill him. Ben ends up in the Thinker's hideout where he again battles Reed, but Reed has a plan as he lures Ben back to the Baxter Building in order to reverse the madness Ben has been stricken with. The Thinker has not been thoroughly defeated as he summons an android and turns him loose on the FF.