Fringe is an American science fiction television series that originally aired on the Fox network from September 9, 2008 to January 18, 2013. The series follows a team which investigates bizarre scientific occurrences related to "The Pattern", a string of fringe science–related incidents worldwide. The team consists of FBI special agent Olivia Dunham (Anna Torv), eccentric scientist Walter Bishop (John Noble) and his genius son Peter Bishop (Joshua Jackson), as well as others at the FBI and the Department of Homeland Security. The series' narrative also largely centers on a parallel universe and the mysterious Observers – a group of pale, bald men who have appeared at significant historical events.