Spooky DnD One-Shot Adventure - Spooky

The characters are members of a faction gathering for an initiation.
It is at a derelict ship which has a well of powerful fey magic.
There are acolytes of a local temple attempting to contact a mysterious being. And a desperate assassin seeks to kill a hag by dawn.
At some point someone finds a mysterious note.
As the adventure progresses creatures are possessed by a strange madness

The characters are friends and family at the celebration. Two of the characters are friendly rivals.
It is at a noble's estate which is touched by shadow magic.
There are ogres enjoying intoxicating mushrooms. And an deranged doctor seeks a way to restore their lover without divine magic.
At some point someone discovers a hidden coffin.
As the adventure progresses people start to gather for a wedding

The characters are a group of creators gathered for a special challenge. One or more characters arrive late, bearing food.
It is at an academy on an island which is home to several sinister cat.
There are plant creatures choosing a leader. And a bone naga is trying to gain entry to a sacred place guarded by wards.
At some point there are strange knocking sounds.
As the adventure progresses people fall ill

The characters are a group of recently met adventurers sent to meet "someone". A character has made an enemy of a local spellcaster.
It is at an abandoned palace which has strong ties to the Feywild.
There are a family of gnomes holding a funeral. And a desperate thug seeks to kill a mind flayer by dawn.
At some point someone rises from the dead.
As the adventure progresses there are hints leading to a great betrayal

The characters are a group of inventors gathered for a special challenge.
It is at a casino on a large ship which is built on the site of an ancient graveyard.
There are kuo-toa worshipping many-eyed creatures. And a demon wants to take part in a tournament for adventurers.
At some point a planar portal opens.
As the adventure progresses a series of hidden tunnels are discovered