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Fox Entertainment's Kevin Reilly said Glee's third episode this seaon will address the death of Cory Monteith:

"The third episode will deal with Finn Hudson being written out of the show; the guys are still making it, and that episode will deal directly with the incidents involved in Cory's passing and drug use in particular."

A lot of fans expected the show to take a break after Cory's death, but Glee's creator Ryan Murphy said he and Lea Michele wanted to get back to work.

Also during that episode, Fox will air public service announcements featuring cast members talking about Cory's passing and the perils of drug addiction.