The CW has released the Official Description of the 7.10 “Supernatural” episode, “Death’s Door”.

BOBBY REVISITS HIS PAST – As Sam (Jared Padalecki) and Dean (Jensen Ackles) race the clock on a high-stakes mission, Bobby (Jim Beaver) seeks the help of an unlikely old friend to solve one of the most personal cases of his life. Robert Singer directed this episode written by Sera Gamble.

This episode is the mid-season finale that will air on December 2nd.