For most people, Halloween is the scariest day of the year. For Sam and Dean Winchester, it’s just another day at the office battling ghosts, demons, angels, vampires, and the list goes on. But to celebrate All Hallows’ Eve this year, TNT will air an all-day Supernatural marathon filled with throwback episodes from the show’s first four seasons. Included in the lineup are the pilot episode (titled “Pilot”), “Ghostfacers,” and “The Benders,” which star Jensen Ackles considers one of the show’s scariest hours. The marathon kicks off at 8 a.m. ET on Wednesday, Oct. 31, and goes until 8 p.m. ET.

See below for the full lineup.

Episode 4.07 — “It’s the Great Pumpkin, Sam Winchester”

8 a.m.-9 a.m. ET/PT

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.

Episode 4.05 — “Monster Movie”

9 a.m.-10 a.m. ET/PT

Sam and Dean investigate a town plagued with monsters from classic black-and-white horror movies.

Episode 2.18 — “Hollywood Babylon”

10 a.m.-11 a.m. ET/PT

Sam and Dean discover that a group of ghosts are murdering the crew of a horror movie.

Episode 3.13 — “Ghostfacers”

11 a.m.-noon ET/PT

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.

Episode 1.01 — “Pilot”

noon- 1p.m. ET/PT

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.

Episode 2.04 — “Children Shouldn’t Play with Dead Things”

1 p.m.-2 p.m. ET/PT

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.

Episode 1.19 — “Provenance”

2 p.m.-3 p.m. ET/PT

The Winchesters must deal with a dangerous spirit bound to an old family portrait that brings misfortune and death to anyone who buys it.

Episode 2.11 — “Playthings”

3 p.m.-4 p.m. ET/PT

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.

Episode 1.15 — “The Benders”

4 p.m.-5 p.m. ET/PT

Dean searches for Sam when he is kidnapped by a backwoods family who likes to hunt humans and use their body parts as trophies.

Episode 3.02 — “The Kids Are Alright”

5 p.m.-6 p.m. ET/PT

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.

Episode 4.11 — “Family Remains”

6 p.m.-7 p.m. ET/PT

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.