Season 2 Episode 1 – A New Day in the Old Town
Olivia returns from the alternate reality and Peter tries to get information about her visit. Walter makes some custard for his son's birthday.
Season 1
Season 1 Episode 20 – There’s More Than One of Everything
Someone close to Fringe Division is attacked, and bioterrorist David Robert Jones returns. Meanwhile, Walter disappears inexplicably.
Season 1 Episode 19 – The Road Not Taken
Olivia has some bad dreams that end up coming true, and then begins seeing visions while awake that aren't really there. She uses these visions to help solve the case of a woman who spontaneously combusted.
Season 1 Episode 18 – Midnight
Someone is killing people and draining their spinal cord fluid. Olivia, Peter, and Walter go to great lengths to stop the deaths, which are happening more and more frequently.
Season 1 Episode 17 – Bad Dreams
A suicide incident occurs at Grand Central Station, which Olivia dreams about. Meanwhile, shocking details emerge about the ZFT manuscript.
Season 1 Episode 16 – Unleashed
A man-made creature attacks Charlie and Walter's history catches up with him.
Season 1 Episode 15 – Inner Child
Olivia makes a bond with a mysterious child that was living alone underground. Meanwhile, a serial killer reemerges.
Season 1 Episode 14 – Ability
While the Division is flummoxed by a mysterious toxin that is killing people by making their facial features disappear, German authorities want to know all about Olivia's contact with escaped convict David Robert Jones, who has relocated to the U.S.
Season 1 Episode 13 – The Transformation
The investigation of another airborne disaster yields evidence of a strange virus, but Olivia and Peter must go undercover to determine the scope of danger presented by this new threat.
Season 1 Episode 12 – The No-Brainer
Olivia, Walter and Peter are brought in to try and stop a killer with the ability to liquefy the human brain.