'Supernatural' Takes on Death, Plus Felicia Day Returns (PHOTOS)

Billie Sam Supernatural Season 15 Episode 18 Dean Castiel
Colin Bentley/The CW

"Let's go reap a reaper," Dean (Jensen Ackles) says in the promo for one of the last ever Supernatural episodes (only three to go!). But that's easier said than done, as he, Sam (Jared Padalecki), Castiel (Misha Collins), and Jack (Alexander Calvert) must contend with the truth about Billie's (Lisa Berry) plan. But can they really stop Death?

In the November 5 episode, "Despair," directed by Richard Speight Jr. (Gabriel), "with the plan in full motion, Sam, Dean, Castiel and Jack fight for the good of the common goal," the logline reads.

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Get an exclusive sneak peek at the finale episode, 'Carry On'!

As they learned in "Unity," Billie plans to become the new God and return everything to where it should be (i.e., anyone who's died and been brought back dies). Plus, God (Rob Benedict) has been orchestrating everything so far. Oh, and Jack turned himself into a bomb to take out God but that backfired as well, and he's about to go off. What will Billie do when she sees that, given she put him on this quest? The promo below teases just that.

Plus, scroll down to see the photos for this episode, which tease Felicia Day's return as Charlie and more.

Supernatural, Thursdays, 8/7c, The CW

Lisa Berry Billie Death Supernatural Season 15 Episode 18
Katie Yu/The CW

Billie (Lisa Berry)

Misha Collins Supernatural Season 15 Episode 18 Castiel
Katie Yu/The CW

Castiel (Misha Collins)

Supernatural Season 15 Episode 18 Sam Dean Jack Castiel
Colin Bentley/The CW

What do they do?!

Lisa Berry Supernatural Season 15 Episode 18 Billie Death
Colin Bentley/The CW

Fear the Reaper.

Dean Castiel Jack Supernatural Season 15 Episode 18
Colin Bentley/The CW

Dean, Jack, and Castiel

Billie Jack Supernatural Season 15 Episode 18 Dean Castiel Sam
Colin Bentley/The CW

What is she going to do?

Supernatural Season 15 Episode 18 Billie Death Dean Castiel Sam
Colin Bentley/The CW

Death vs. Dean (Jensen Ackles), Castiel, and Sam (Jared Padalecki)

Lisa Berry Jared Padalecki Supernatural Season 15 Episode 18 Billie Sam
Colin Bentley/The CW

“About that conversation you had with the Empty…”

Jensen Ackles Jared Padalecki Supernatural Season 15 Episode 18 Sam Dean
Bettina Strauss/The CW

Dean and Sam

Sam Dean Charlie Supernatural Season 15 Episode 18
Bettina Strauss/The CW

Definitely not a social call

Felicia Day Supernatural Season 15 Episode 18 Charlie
Bettina Strauss/The CW

Felicia Day returns as Charlie.

Supernatural Season 15 Episode 18 Richard Speight Jr Director
Katie Yu/The CW

Behind the scenes with director Richard Speight, Jr.

Lisa Berry Richard Speight Jr Supernatural Season 15 Episode 18
Katie Yu/The CW

Behind the scenes with Lisa Berry and director Richard Speight, Jr.