Peter, Walter, Olivia and Broyles pursue a strange and deadly occurrence in Philadelphia where a bomb blew up inside a train station but left no trace of any explosive device.
The perplexing and unexplained set of circumstances returns Walter to the lab to closely examine the human remains where he uncovers an unlikely energy source that triggered the explosion. With the explosive threat of more bombs and links to a classified military project, the intense investigation leads Olivia and Peter to Iraq. Fringe case file # 203-10109
original airdate-October 1,2009 rating-6.03 million
songs;"Fringe Main Title Theme" by JJ Abrams
- "De "Blue Bayou" by Roy Orbison
- "Jazz Me Blues" by Les Paul
- "Can't You See" by The Marshall Tucker Band
- "The Air That I Breathe" by The Hollies
Fringe Event: Human bombs via injected serum
Classified case connection:Experimental military project- Project Tin Man
Observer Sighting--The Observer receives and reviews photographs of Walter from a secretive courier.