When confronted by our worst nightmares, the choices are few: fight or flight. We hope to find the strength to stand against our fears. But sometimes, despite ourselves, we run. What if the nightmare gives chase? Where can we hide then?
In Ireland, Peter attempts to move beyond the past, but discovers that a mysterious woman is willing to kill to find him. Matt Parkman and an unexpected ally fly to Philadelphia to hunt down the 'boogeyman', but the pair finds themselves outmatched. Monica tries to come to terms with her new abilities role as a local hero. Mohinder Suresh meets his new partner and gets a disturbing assignment. Noah Bennet takes a step to further protect his family. As Hiro Nakamura continues to fix the past, Ando attempts to piece together what's happened to his friend.