The Big Empty

The Big Empty is the 4th episode of Season 13. It aired on November 2, 2017.

Summary
When multiple patients of grief counselor Mia Vallens (guest star Rukiya Bernard) turn up dead, Sam, Dean and Jack investigate the mystery surrounding the murders and, each inadvertently, are forced to deal with unresolved grief of their own.

Plot
TBA.

Main Cast

 * Jared Padalecki as Sam Winchester
 * Jensen Ackles as Dean Winchester and Buddy
 * Misha Collins as Castiel and Cosmic Entity
 * Alexander Calvert as Jack

Guest Stars

 * Courtney Ford as Kelly Kline

Co-Stars

 * Rukiya Bernard as Mia Vallens
 * John Emmet Tracy as Tom
 * Niall Matter as Buddy
 * Matt Hamilton as Wes Bailey
 * Kayla Deorksen as Erica Bailey
 * Brenda Matthews as Gloria Simon
 * Brandy Le as John Driscoll
 * Brenden Sunderland as Scotty / Ghostly Boy
 * Janet Glassford as Bailey's neighbor
 * Alan Silverman as Roadside Assistant (voice only)

Featured Supernatural Beings

 * Nephilim (Jack)
 * Primordial Entities (God, The Darkness; mentioned only, Cosmic Entity)
 * Revenant (mentioned only)
 * Seraph (Castiel)
 * Shapeshifter (Buddy, Mia Vallens, Mia Vallens' mother; mentioned only)

Continuity

 * A shapeshifter was previously featured in the Season 12 episode, There's Something About Mary.
 * Castiel was previously on Earth in the Season 12 episode, All Along the Watchtower.
 * A Practitioner's Guide to Exorcism was previously featured in the Season 10 episode, The Prisoner.
 * In an attempt to get Castiel back to sleep, the Cosmic Entity shows him visions of him returning the souls to Purgatory in Meet the New Boss (Season 7) and the Escape of the Leviathans in Hello, Cruel World (Season 7), his grace being stolen by Metatron in Sacrifice (Season 9) and Lucifer killing Castiel in All Along the Watchtower (Season 12).

Trivia

 * The episode aired on November 2, 2017, the 34th anniversary of Mary Winchester's death.
 * This is the first episode where Misha Collins plays multiple characters in an episode since We Happy Few in Season 11.
 * This is the fourth time a character faces another version of their character in the same scene with Dream A Little Dream Of Me in Season 3, The End in Season 5 and The Man Who Knew Too Much in Season 6 being the first three.
 * This is the second episode God doesn't have anything to do with Castiel's resurrection with I'm No Angel in Season 9 being the first one.
 * It is revealed in this episode that every deceased angel and demon goes to an eternal slumber in The Empty.
 * This is the third episode featuring Dean being impersonated by a shapeshifter. The first was the Serial Killer Shapeshifter in season 1's Skin, the first episode to feature a shapeshifter. The second was the Alpha Shapeshifter in season 6's Two and a Half Men.
 * Dean often refers to Jack as "The Antichrist" because he believes he is inherently evil due to being the son of Lucifer, This is incredibly hypocritical however, as Dean has met the actual Antichrist Jesse Turner, in Season 5s I Believe the Children Are Our Future. In the episode Jesse turns out to not be evil at all, and actually disappears never to be seen again in order to stop anyone being hurt by his powers.
 * Sam approved Jack's dislike against Anakin Skywalker. In Star Wars Universe, Anakin Skywalker is the chosen one and he falls under the influence of Sheev Palpatine and becomes evil.

Quotes
"Cosmic Entity: Before God and Amara, creation, destruction, Heaven, Hell, your precious little Earth, what was there? Castiel: Nothing. Cosmic Entity: Yes. That's right. Nothing. Nothing but empty and you are soaking in it. Angels and demons, you all come here when you die (...) sleeping an endless, peaceful sleep."

- Cosmic Entity and Castiel talking about The Empty

Goofs and Errors

 * At the beginning of the episode Jack is watching Star Wars: The Clone Wars TV series, and states that he likes a character called "Osaka", however there is not a character of that name in the show. It is likely he meant to say "Ashoka"