- Previous episode S03E10 - The Firefly
- Number S03E11
- Director Jeannot Szwarc
- Writer Josh Singer
When the Fringe Team visits Massive Dynamic’s assembly of the doomsday device, Walter becomes greatly concerned for Peter’s well-being, so he turns to Nina for added brain power to understand the relationship between Peter and the superweapon. Meanwhile, the discovery of a dead body triggers an intense investigation.