Dilton undergoes a complete change of character, becoming sloppy, depressed, lazy and nasty. Archie does some investigating and discovers that someone has tampered with Dilton's medical report to make him think his brain is "dissolving" and that he's going insane.; A good-looking new boy at Riverdale High is able to date multiple girls, sometimes several at once. It turns out he's an alien who has disguised himself as an Earth teenager, and is using his power of self-duplication to be the ultimate Casanova.