The patch that came with this pack introduced a new Scared emotion to the base game that is heavily used with this pack. New Scared Emotion Scared is a new Emotion in The Sims 4 This does mean the only type of lot that can have a haunting is a Sim's home. It's also where you'd change to Tiny Home if you have the Tiny Living stuff pack.
This is not a Lot Trait, so you go to the top-left menu where you set the lot type, and change to this option. In order to experience a haunting, you must be playing in the new Haunted Residential lot type. How to Play in a Haunted House How to play in a haunted house? Pick the Haunted House Residential Lot Type It also marks the return of Bonehilda and features a new Paranormal Investigator career. While we already had ghosts in Sims 4, this pack features a new type of haunt (Spectres) who appear at night and make Sims uncomfortable.
The Sims 4 Paranormal Stuff releases Januand brings haunted houses to the game. The Sims 4 Paranormal Stuff Hauntings, Spectres and Paranormal Investigator