This week's episode of Fringe kicked off in Philadelphia.

From there, Peter, Olivia and Walter must investigate the bombing of a train station. At the scene of the gruesome crime, Walters discovers something strange about the human remains and realizes: people are being turned into bombs!

That's all you get for now. Read the rest in our recap of "Fracture."

Matt Richenthal is the Editor in Chief of TV Fanatic. Follow him on Twitter and on Google+.