Screw candy, Halloween is serving up 12 straight hours of Supernatural this year!

TNT is celebrating the spookiest day of the year with Dean (Jensen Ackles) and Sam (Jared Padalecki) Winchester with an all-day Supernatural marathon, so set your DVRs! The scares beings at 8 a.m. on the morning of Wednesday, Oct. 31 and last until 8 p.m. that evening, leaving plenty of time for trick-or-treating before bed. It will span four seasons, picking out the scariest of the scary episodes. You know what that means: Bloody Mary, changelings, and murderous paintings will haunt your dreams Halloween night!

Check out the full schedule below:

8 a.m. — "It's the Great Pumpkin, Sam Winchester" (Season 4, Episode 7)
Sam and Dean meet Castiel and his fellow angel Uriel, who warn the brothers to avoid intervening in a town where a witch is attempting to summon the demon Samhain, opening one of the Seals.

9 a.m. — "Monster Movie" (Season 4, Episode 5)
Sam and Dean investigate a town plagued with monsters from classic black-and-white horror movies.

10 a.m. — "Hollywood Babylon" (Season 2, Episode 18)
Sam and Dean discover that a group of ghosts are murdering the crew of a horror movie.

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11 a.m. — "Ghostfacers" (Season 3, Episode 13)
While investigating the haunted Morton Mansion, Sam and Dean run into a couple of familiar faces and become inadvertent participants in a new reality show named Ghostfacers. As events turn deadly and the team are trapped in the house, the investigation becomes a battle to survive until morning.

12 p.m. — "Pilot" (Season 1, Episode 1)
Sam is about to graduate from college and has an interview set up to join one of the most prestigious law schools in the country.

1 p.m. — "Children Shouldn't Play with Dead Things" (Season 2, Episode 4)
Dean and Sam investigate the death of a young college student who died in a car accident, but whose grave is now surrounded by a circle of dead plants.

Supernatural: Everything We Know About Season 14 So Far

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2 p.m. — "Provenance" (Season 1, Episode 19)
The Winchesters must deal with a dangerous spirit bound to an old family portrait that brings misfortune and death to anyone who buys it.

3 p.m. — "Playthings" (Season 2, Episode 11)
Sam and Dean investigate a Connecticut inn run by a single mother where mysterious deaths are taking place. They find evidence of Hoodoo, and try to figure out who is causing the chaos.

4 p.m. — "The Benders" (Season 1, Episode 15)
Dean searches for Sam when he is kidnapped by a backwoods family who likes to hunt humans and use their body parts as trophies.

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5 p.m. — "The Kids Are Alright" (Season 3, Episode 2)
Sam and Dean track down Changelings that are pursuing mothers and their children. A boy they protect bears a strange resemblance to Dean, which at first makes Dean uncomfortable because he once had a one-night stand with the boy's mother Lisa.

6 p.m. — "Family Remains" (Season 4, Episode 11)
Sam and Dean investigate a house occupied by a female ghost, but when a new family moves in things take a turn for the worse.

7 p.m. — Episode 1.05 - "Bloody Mary" (Season 1, Episode 5)
A man dies of a stroke in front of a mirror but Sam and Dean believe something, or someone else (Bloody Mary), may be behind his death. Dean tries to help Sam open up about his girlfriend's death, particularly after Sam lets it slip that there's some information that he hasn't told Dean.

Supernatural returns for Season 14 on Thursday, Oct. 11 at 8/7c on The CW.

(Full disclosure: TV Guide is owned by CBS, one of The CW's parent companies.)