Fringe: Season 2, Episode 3

2 - 3: Fracture

A secret military experiment is turning people into human bombs. After one such bomb detonated in a train station, Peter and Olivia travel to Iraq to meet one of Peter's contacts who was involved in the project. They find a list of names from the experiment, the victim in the train station being one of them. They return to find the surviving members, and are able to prevent the next subject from exploding. They find the man responsible (Stephen McHattie) and bring him into custody; the man suggests the bombs were intended to eliminate agents working for the Observer. Also, Weiss cures Olivia's inability to walk without a cane.