We have the synopsis for Supernatural season 13 episode 11.
 
SUPERNATURAL
“Breakdown” — (8:00-9:00 p.m. ET) (Content Rating TBD) (HDTV)


TIME TO RETURN THE FAVOR – Donna (guest star Briana Buckmaster) calls Sam (Jared Padalecki) and Dean (Jensen Ackles) for help after her niece, Wendy (guest star Sarah Dugdale), goes missing. The three hunters discover Wendy was kidnapped by a man who sells human parts to monsters in a grotesque online auction and race to save her before it is too late. Amyn Kaderali directed the episode written by Davy Perez (#1311). Original airdate 1/25/2018.
 
A new "monster" i.e. a human one. Donna is back after appearing last week. What do you think of this description. Let us know in the comments or in the discussion thread for episode 11.