Walter is getting high with guest star Jorge Garcia, as a security guard.
Walter goes through William Bells office for what his old notes and hopes that by revisiting them, he can begin to think the way he used to.
Olivia invites Peter to a street fair, and he lies, telling her that he is at home when he is actually doing research.
The Fringe division runs into a case wherein men are defying gravity. Once one of them dies, he is so heavy they cannot lift him off the floor.
The test subjects have muscular dystrophy, and therefore are willing participants in experiments that may cure them.
Peter and Olivia explore their new relationship by being brutally honest with one another.
Walter discovers a file of William's that suggests they may be able to summon the soul back into the host using magnets. Walter wants to try to bring William back.
William Bell's soul comes back. Through Olivia.