The preview also gives a glimpse of the last episode airing this year which will see Emma telling Will that she is indeed marrying Ken.
The cast of "Glee" gets comfy in pajamas and soft beds in an upcoming episode. Called "Mattress", it sees the club being tapped to star in a mattress commercial because Rachel thinks that famous people won't get bullied.
When the Glee Club is left out of the yearbook because of budget cuts, everyone seems to be relieved that they won't have to suffer the ridicule of years past. Everyone except Rachel, that is, who wants her legacy cemented in print. Meanwhile, Quinn makes it her mission to be in the Cheerios yearbook photo, and Will and Terri's relationship is shaken to its core.
"Mattress" will air on December 2 as the second to last episode to air this year. The musical show will officially go on a break after the December 9 episode and return on a new time slot, Tuesday, April 13 at 9/8c. It will be led by the ninth season of "American Idol".