Cory Monteith, who played Finn, was set to return to Glee for the fifth season after having missed the last few episodes of the fourth season while undergoing drug rehabilitation treatment from late March through late April in 2013. However, Monteith died of a drug overdose on July 13, 2013.
Also, did Finn from Glee actually die? July 13, 2013
Also question is, what episode does Finn die in glee?
Monteith, who was found dead of an overdose in a Vancouver hotel room on July 13, made his final Glee appearance in the episode Sweet Dreams, which first aired April 13 (and which you can watch in full below). The storyline had Finn belatedly heading off to college.
Who has died from Glee?
Cory Allan Michael Monteith