Season 4
The season introduced several new characters, such as Jake Puckerman, Marley Rose, Kitty Wilde, Hunter Clarington, and winner and runner up of The Glee Project, Ryder Lynn and Betty Pillsbury respectively, it also counts with the return of Unique Adams. New characters were introduced as the plot focuses on the new generation of the New Directions due to the loss of several members after graduation. The plot also focuses on Rachel's college experience in New York as well as what the rest of the alumni are doing after graduation.
Episodes
1 The New Rachel Sep 13, 2012 
2 Britney 2.0 Sep 20, 2012 
3 Makeover Sep 27, 2012 
4 The Break-Up Oct 4, 2012 
5 The Role You Were Born to Play Nov 8, 2012 
6 Glease Nov 15, 2012 
7 Dynamic Duets Nov 22, 2012 
8 Thanksgiving Nov 29, 2012 
9 Swan Song Dec 6, 2012 
10 Glee, Actually Dec 13, 2012 
11 Sadie Hawkins Jan 24, 2013 
12 Naked Jan 31, 2013 
13 Diva Feb 7, 2013 
14 I Do Feb 14, 2013 
15 Girls (and Boys) on Film Mar 7, 2013 
16 Feud Mar 14, 2013 
17 Guilty Pleasures Mar 21, 2013 
18 Shooting Star Apr 11, 2013 
19 Sweet Dreams Apr 18, 2013 
20 Lights Out Apr 25, 2013 
21 Wonder-Ful May 2, 2013 
22 All or Nothing May 9, 2013