GLEE Episode 5.12 Photos 100 March 7, 2014 at 2:28 pm by Seat42F GLEE: Mercedes (guest star Amber Riley} returns to McKinley High to celebrate the glee club in the “100” episode of GLEE airing Tuesday, March 18 (8:00-9:00 PM ET/PT) on FOX. ©2014 Fox Broadcasting Co. CR: Adam Rose/FOX Seat42FPages: 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20
