Spooky DnD One-Shot Adventure - Spooky

The characters are a group of caravan guards protecting a single merchant, stopping here for the night. A character is celebrating a birthday.
It is at a grove of trees sacred to a local religion which gives nightmares to any who try to sleep there.
There are a family of lycanthropes who have recently moved in. And a gargoyle wants to hunt down werewolf.
At some point they notice an obvious clue.
As the adventure progresses people start to break into a terrible chanting

The characters are an experienced group of adventurers looking after the place for a night.
It is at an asylum for the insane which has a sinister pentagram that only appears on this night each year.
There are ogres searching for a warlock. And the spirit of a necromancer is trying to escape from a crystal ball.
At some point someone finds a clue.
As the adventure progresses more and more zombies start to approach

The characters are a group of inventors gathered for a special exhibition. A character is a shapechanger.
It is at a museum of curios which is disguised by a hallucinatory terrain.
There are acolytes of a local temple warding off a spirit. And a superstitious ghost seeks to make a sacred necklace.
At some point a spirit tries to communicate with a character.
As the adventure progresses there are hints leading to a great betrayal

The characters are travelers looking for a night's shelter, after their coach had an accident. A character is haunted by an annoying fey.
It is at an isolated village which has eyes that follow visitors everywhere.
There are a circle of druids enjoying intoxicating mushrooms. And a necromancer is planning a grisly ritual to animate the dead.
At some point someone arrives in a strange costume.
As the adventure progresses people fall ill

The characters are players of a particular game gathering for a "special" competition. Two of the characters have fallen in love.
It is at a cursed lighthouse which gives nightmares to any who try to sleep there.
There are a variety of kobolds, sprites and other small-sized creatures, scavenging what they can. And a demon seeks to defeat a pious sage.
At some point someone arrives in a strange costume.
As the adventure progresses there are signs of a great evil approaching