Spooky DnD One-Shot Adventure - Spooky

The characters are local villagers spending the night here on a dare. A character is possessed by a ghost.
It is at an eerie hospice which was the site of several murders.
There are ogres preparing for a feast. And a bone naga is trying to gain entry to a sacred place guarded by wards.
At some point someone arrives in hooded robes.
As the adventure progresses there are hints leading to a great betrayal

The characters are a group of caravan guards protecting a single merchant, stopping here for the night. One or more characters has an inquisitive mount.
It is at a noble's estate which was the site of several murders.
There are a family of lycanthropes who have recently moved in. And a shadow dragon wants help entering from the Shadowfell.
At some point someone arrives in hooded robes.
As the adventure progresses people start to break into a terrible chanting

The characters are a circle of spellcasters hunting for a magical robe. A character has a treasure map of the place, promising "a great reward".
It is at a grove of trees sacred to a local religion which has a large network of passages underneath.
There are plant creatures creating a strange garden. And a vampire bound to the area is looking for a suitable partner.
At some point a drunk friend of a character arrives.
As the adventure progresses a great evil starts to escape its prison

The characters are travelers looking for a night's shelter, after their coach had an accident. A character is haunted by a harmless ghost.
It is at an annual fair which has stone statues in every corner.
There are acolytes of a local temple attempting to contact a mysterious being. And a cold-hearted alchemist wants to protect a magnificent golem.
At some point someone finds a clue.
As the adventure progresses cowled strangers begin to arrive

The characters are monsters looking for somewhere to hide for the night.
It is at a noble's estate which is associated with a dangerous werebear.
There are a gang of friendly outlaws attempting to contact a mysterious being. And a cult fanatic is seeking a way to pay a debt due tonight.
At some point there are strange knocking sounds.
As the adventure progresses people start dying in different ways