Season Finale Part 1:Let It Bleed
"A demon kidnaps Ben and Lisa to get to Dean. Sam and Dean are forced to join with an unlikely ally to free them."
Season Finale Part 2:The Man Who Knew Too Much
"The wall comes down in Sam’s head and all hell breaks loose. Dean and Bobby are, for once, at a total loss on how to help him and are forced to stand by and do nothing while Sam breaks. The battle for heaven comes to a head."
This Friday, we get a special 2-hour season finale of Supernatural, and it's certainly looking like things are going to get VERY interesting. The wall in Sam's head comes crashing down, Ben and Lisa are kidnapped by demons, things come to a head with Castiel and Crowley, and by the looks of that extended promo, the poor poor Impala is wrecked once again.
The Season Finale Of Supernatural Airs This Friday On The CW