Season 4
The fourth season of the American science fiction television series Fringe premiered on Fox on September 23, 2011 and concluded on May 11, 2012, consisting of 22 episodes. The series is produced by Bad Robot Productions in association with Warner Bros. Television. The show was officially renewed for a fourth season on March 24, 2011.
Episodes
1 Neither Here Nor There Sep 23, 2011 
2 One Night in October Sep 30, 2011 
3 Alone in the World Oct 7, 2011 
4 Subject 9 Oct 14, 2011 
5 Novation Nov 4, 2011 
6 And Those We've Left Behind Nov 11, 2011 
7 Wallflower Nov 18, 2011 
8 Back to Where You've Never Been Jan 13, 2012 
9 Enemy of My Enemy Jan 20, 2012 
10 Forced Perspective Jan 27, 2012 
11 Making Angels Feb 3, 2012 
12 Welcome to Westfield Feb 10, 2012 
13 A Better Human Being Feb 17, 2012 
14 The End of All Things Feb 24, 2012 
15 A Short Story About Love Mar 23, 2012 
16 Nothing As It Seems Mar 30, 2012 
17 Everything in Its Right Place Apr 6, 2012 
18 The Consultant Apr 13, 2012 
19 Letters of Transit Apr 20, 2012 
20 Worlds Apart Apr 27, 2012 
21 Brave New World (1) May 3, 2012 
22 Brave New World (2) May 11, 2012