

FBI Special Agent Olivia Dunham, brilliant but formerly institutionalized scientist Walter Bishop and his scheming, reluctant son Peter uncover a deadly mystery involving a series of unbelievable events and realize they may be a part of a larger, more disturbing pattern that blurs the line between science fiction and technology.
Season information provided by TMDB.

2008
20 episodes
As the first season begins, FBI Special Agent Olivia Dunham is called in to investigate a mysterious outbreak that nearly kills her partner. The only person with any answers is an institutionalized scientist, Dr. Walter Bishop who can only be released under the care of his estranged son. Together, the three discover that the answer to this mystery is only a small piece of a much larger, more shocking truth.

2009
23 episodes
Unable to police a world in which science has advanced beyond our wildest dreams — and nightmares — FBI Special Agent Olivia Dunham seeks help from brilliant but damaged scientist Dr. Walter Bishop and his estranged son with a dark past, Peter. Under the direction of Agent Phillip Broyles, they solve gruesome mysteries and prevent imminent attacks.
Official trailers and clips from TMDB.

Mark Valley
John Scott

John Noble
Walter Bishop

Seth Gabel
Lincoln Lee

Spencer List
The Child

Leonard Nimoy
Dr. William Bell

Mark Blum
Claus Penrose

2010
22 episodes
Season three continues the rabbit-hole journey of three unlikely souls — FBI Agent Olivia Dunham, Fringe Scientist Walter Bishop and his jack-of-all-trades son Peter — through mind-bending investigations, parallel realities and threats growing in the borderlands between science and the unimaginable.