Clap Your Hands If You Believe...

While investigating possible UFO abductions in a small Indiana town, Sam and Dean question the first victim's father Brennan, a watchmaker who seems to know more than he's letting on.

While Sam watches Brennan, Dean heads to the cornfield where people have been disappearing, and is seemingly kidnapped by aliens.

Hours later, Dean returns with no knowledge of where he has been and begins seeing a strange man and a fairy, which he manages to blow up in a microwave. Sam hears his story, but remains sceptical.

Spying on Brennan in his shop, Sam finds elves working there and demands the truth. Brennan tells him that he made a Faustian pact with a leprechaun - he would give up his first-born in exchange for his business being saved. Meanwhile, Dean is arrested for assault while trying to follow the strange man that he keeps on seeing.

Sam goes with Brennan to undo the spell, but Brennan is killed by the leprechaun, who has been using the guise of one of UFO followers to cover up his devious activities. Sensing Sam having no soul, the leprechaun offers to get it back for him, but Sam rejects the offer and attacks the leprechaun. Meanwhile, in his cell, Dean fights the strange man who turns out to be a gnome. Using salt and Brennan’s spell, Sam is able to return the leprechaun and the gnome to their own realm.

Check out the trailer for Clap Your Hands If You Believe.