“TO SAVE A MONSTER/WHEN DEADMEN WALK.” Prof is infected with an alien fungus. Swamp Thing watches from cover and is attacked by a wolf, but brushes it off. The wolf is possessed by Deadman, who asks Rama Kushna why he’s there. Back at Challengers Mountain, the heroes can’t cure Prof’s disease. Angry, Ace orders Gaylord to take a walk, which he does. Deadman tries a cure, diving in to possess Prof and fighting from within. Prof sloughs off the fungus and Deadman passes out. Prof wakes, healthy, and announces that Swamp Thing is Dr. Alec Holland, who’s wandered off and needs help. The Challengers search, but Swamp Thing has hopped a freight for Philadelphia. Deadman tries to possess Swamp Thing and bounces—he’s already possessed! Deadman possesses Ace and announces that Swamp Thing is in Philly, where Swamp Thing rages to the state asylum and the cell of Duncan Pramble, the former Multi-Man.
Deadman is sent to help heal the still ailing Prof Haley. When he revives, he insists that the Challengers try to help cure the Swamp Thing for all his help.
The Challengers return to Perdition, PA, but find no trace of the Swamp Thing. Deadman, taking possession of Ace reveals to the Challengers that the Swamp Thing is in fact in Philadelphia now - and he's in trouble!