На википедии написали:
"Season five of Supernatural, an American television series, will begin airing on September 17, 2009. This is the Fifth season to air on the CW television network. Season four regular cast members include Jared Padalecki, Jensen Ackles and Misha Collins. It will revolve around Dean who is going to have to kill Lucifer and put him back on the road to hell."
Конечно, википедия - это википедия, но может, хоть дату выхода они правильную назвали?