Spooky DnD One-Shot Adventure

The characters are a group of ghost investigators with a covered wagon, investigating a mystery. A character has made an enemy of a local spellcaster.
It is at a temple on an island which is the prison for a fiend.
There are a group of monster hunters seeking a vampire. And a creature here is possessed by a sentient berserker axe.
At some point there are muffled screams.
As the adventure progresses a series of hidden tunnels are discovered

The characters are local villagers spending the night here on a dare. A character is being hunted by a monster.
It is at an annual fair which has stone statues in every corner.
There are kuo-toa worshipping many-eyed creatures. And a cult fanatic is seeking a way to pay a debt due tonight.
At some point a spirit tries to communicate with a character.
As the adventure progresses more and more things light on fire

The characters are local villagers spending the night here on a dare. One or more characters belong to a local secret society.
It is at an annual fair which has a sinister pentagram that only appears on this night each year.
There are goblins who worship spiders, preparing a sacrifice. And a vengeful warlock seeks to burn everything to the ground.
At some point a spirit tries to communicate with a character.
As the adventure progresses it gets colder and there is a snow storm

The characters are a group of ghost investigators with a covered wagon, investigating a mystery. A character is being hunted by a bounty hunter.
It is at a haunted shipwreck which was the site of several murders.
There are a patrol of guards sheltering for the night. And an imp seeks suitable servants for its patron.
At some point a bell starts to toll.
As the adventure progresses there is a series of murders

The characters are a group of ghost investigators with a covered wagon, investigating a mystery. Two of the characters have fallen in love.
It is at an isolated farm which is full of mirrors that sometimes show strange scenes.
There are goblins who worship wolves, preparing a sacrifice. And the spirit of a necromancer is trying to escape from a crystal ball.
At some point one or more of the characters has a vision.
As the adventure progresses there are signs of a great evil approaching