Here's what we know about Supernatural season 15 episode 2.
The official Press Release
 

SUPERNATURAL
“Raising Hell” – (8:00-9:00 p.m. ET) (TV-14, DLV) (HDTV)


SENDING OUT AN SOS – Sam (Jared Padalecki), Dean (Jensen Ackles) and Castiel (Misha Collins) call on Rowena (Guest Star Ruth Connell) to help keep the evil souls at bay and get an unexpected assist from Ketch (Guest Star David Haydn-Jones). Robert Singer directed the episode written by Brad Buckner & Eugenie Ross-Leming (#1503). Original airdate 10/17/2019.

Source:

The CW

 The original trailer
 
 
Sneak Peek
 
 
Writer Tweets

 

 
 The promotional pictures
 
 
For more spoilers, rumors and BTS photos check out the discussion thread for episode 15x02.
 
Rowena returns. Sam and Dean confront ghosts/demons. Kevin is there as well. Is he a good ghost or a bad ghost?  What do you take from all of this? Let us know in the comments or in the discussion thread for episode 15x02