The following night they heard a call over the police scanner about another bizarre death, this time at a Halloween party. They were quick to throw on the FBI gear and head out. The basement party was full of teenagers dressed in their holiday attire. Dean stopped when he saw the police questioning a young blonde and started to say something.

"Jail bait." Kayla coughed and walked to the other side of the room.

He glanced at Sam. "I would never."

"Save it for someone who believes you." Sam went on his own search of the basement, looking for the hex bag.

Kayla found it first, in the couch cushions. She held it up for Dean to see, mainly to get him to stop talking to the girl.

After some intense research back at the hotel, Sam dug up some possible answers.

"I don't think they're getting payback, I think they're working a spell." He read from the book in his hand. "Three blood sacrifices over three days, the last before midnight on the final day of the final harvest. On the Celtic calendar, the final day of the final harvest is Halloween."

"Lovely." Kayla closed her book. "And what are our luck victims being offed in the name of?"

"The summoning of Samhain."

"Sam who?" Dean looked at him.

"Samhain, one word, is the origin of Halloween. The Celts believed that October 31st was the one night of the year when the veil was thinnest between the living and dead. It was Samhain's night, masks were put on to hide from him, sweets left on the porch to appease him, faces carved into pumpkins to worship him. He was exorcised months ago."

Dean nodded. "But the traditions stuck."

"And now Halloween is all about kids and candy, imagine that."

"This is serious." Sam told them. "We're talking heavyweight witchcraft. This ceremony can only be performed every six hundred years."

"And I'm guessing the six hundred year mark rolls around…"

"Tomorrow night."

"Of course it does." Dean looked at the illustration in the book. "It's a lot of death and destruction for one demon."

"Well once he's raised, Samhain can do some raising of his own. Dark, evil crap abound. They follow him around like the pied piper."

"So we're talking ghosts."

"Yeah."

"Zombies?"

"Mm-hmm."

"Leprechauns?"

"Dean."

"Those little dudes are scary. Small hands." He held up a hand.

Kayla pushed his hand down. "So what else can this thing do?"

"We're talking about every evil thing we've ever seen, everything we hunt, all in one place."

She nodded. "Lots of death and mayhem then."

"No kidding."