From publisher blurb:
Disquieting Apparitions is a supplement for Visions Dark & Dreadful, a role-playing game of Victorian ghost hunting. It expands the basic concept of ghosts to include other phantasmal entities. Seven unique apparitions are provided, and each includes suggestions for genesis, purpose, and supernatural powers. These apparitions are found in European folklore, but some liberties have been taken to better support the game’s setting.
The [Game Master's Guide] is required to make full use of Disquieting Apparitions.