Fight Or Flight

In Ireland, lost hero Peter Petrelli tries to start a new life with Caitlin, but soon discovers that a mysterious woman, Elle, is trying to find him. Elle has the ability to conjure electricity, and when she suspects that Caitlin's brother Ricky is hiding Peter, she kills him with her powers. Later, Peter admits to Caitlin that Ricky's killer was after him.

Matt Parkman recruits Nathan Petrelli to help find his father Maury, following his attack on Molly. They find Maury in Philadelphia, and discover that he has a mind-reading ability, which he uses to trap both Matt and Nathan in mental illusions while he escapes. Both men snap out of their visions, to find another death threat...

Also, as Hiro continues to fix the past in feudal Japan, Ando attempts to piece together historically what's happened to his best friend. Monica tries to come to terms with her abilities and her role as a local hero, while Mohinder meets his new partner and is given a disturbing assignment.

And H.R.G. takes a step to further protect his family.