The synopsis for Supernatural season 15 episode 10.
 
“The Heroes’ Journey” — (8:00-9:00 p.m. ET) (TV-14, LV) (HDTV)
DON’T KNOW WHAT YOU HAVE UNTIL IT’S GONE – Sam (Jared Padalecki) and Dean (Jensen Ackles) hit the road to help an old friend, but it appears that their luck may have finally run out and they are the ones who may be in need of rescue. John Showalter directed the episode written by Andrew Dabb (#1510).
Original Airdate 1/23/2020.

Source:

CW

 
Who is the old friend? What will the boys need rescuing from? Give us your thoughts in the comments or in the discussion thread for episode 10.