We have a clip from Supernatural season 13 episode 19.
 
 
 So, Dean never told Sam about almost dying back in 'Advanced Thanatology'. I'm guessing he also left out the part about them both being important? Jessica is back, watching the boys and she knows all of their secrets, and is a bit of a tease. Plus they are looking for Rowena. It sounds like a fun episode. What do you think? Let us know in the comments or in the discussion thread for episode 19.