When a Marine is found dead, Gibbs, Fornell and the team hit the open road to bust an illegal trucking operation.

Walter explains to Olivia how Peter came from the alternate universe, and how he was willing to risk everything to save his son.

The Observer chooses to do something other than observe, abducting a college student. However, when the Fringe team investigates, they discover that there is more than one Observer.. in both…