EW's Ausiello has some great spoilers regarding the May 13 season finale, courtesy of executive producer Sera Gamble. I can't wait to see Sam square off against Lucifer!
Question: Do you know what is going on in the season finale of Supernatural? —Elena
Ausiello: I don’t, but exec producer Sera Gamble does: “We’re leading up to the big Death Match between Lucifer and Michael, which would cause the destruction of half the planet,” she previews. “Sam and Dean, of course, are trying to throw a wrench in the works — but these are the most powerful beings they’ve ever been up against, so their odds aren’t great. Sam comes up with an incredibly risky Hail Mary to defeat Lucifer, which involves spending some very creepy, violent one-on-one time with the guy. Terrible for Sam, but pretty damn fun to watch.”