It seems like only yesterday that we were all eagerly re-watching (and re-watching) the pilot episode of Glee. Tomorrow night will mark the fall finale for the series, and just when things were really getting good. But don’t worry - at least one last secret will break before the series takes its winter break.

Read on to learn more, and see a preview video that hints at the progression of one important story line.

In “Sectionals,” the Glee club will compete for their chance to keep singing. The much-anticipated competition has been hyped all season long, with the club trying out tons of different songs to work up the perfect set list for the event. But at least one bombshell will rock the club, possibly putting their chances to win the event in jeopardy (supposedly, anyway - is there really any question that our club will continue in the competition? Not really).

The funny scene above shows a multi-person cell phone conversation that leads up to the big spilling of the beans, when Finn finally finds out the truth about his girlfriend Quinn.