All the water in a cop's body solidifies and then explodes when he is sent on a suspicious mission by an unknown source. As Fringe begins to investigate this strange happening, they discover a top secret military experiment which may have connections to their case. This leads them back to one of Peter's shady contacts in Iraq, where they learn that there may very well be more than a few more human bombs walking around. On top of this Olivia continues to cope with her injuries, but is beginning to get frustrated with the man that is supposed to be helping her. And with "The Colonel" sending his next unwitting human bomb to intercept a messenger, the tam is quickly running out of time.
And where is the Observer? Well if you missed him, I must say that you need to start trying a little harder, because you just aren't putting any effort into watching this show. He is one of "them", the people watching us and who "The Colonel" was trying to stop. We see him opening the second briefcase from the man in the black trench coat, which contains pictures of Walter. The picture of him is below with a red box around him, just in case you can't see him still. Idiots.
