[1] Claire faces Stephen Canfield, an escaped villain that can create vortices.
Peter has returned from the future, which he discovers has affected him deeply.
After Adam is unhelpful in finding the formula, Hiro tries to befriend Daphne and Knox.
Mohinder puts Maya in a bad situation while trying to correct errors in his research.
Linderman tells Nathan to stay with Tracy, so that they can make great accomplishments.