On this Thursday's season finale of Supernatural, Sam makes a deal with Lucifer in order to prevent the Apocalypse.

As a clip from "Swan Song" reveals, Dean takes issue with this decision, but eventually gets on board.

What will that mean for the brothers and for the show in general? You'll have to tune in if you wish to find out.

But we can offer fans a few more glimpses at the major episode below. Click on the following photos to enlarge scenes from the Supernatural season finale.

Matt Richenthal is the Editor in Chief of TV Fanatic. Follow him on Twitter and on Google+.