However, there are a few possibilities you might be thinking of:
* "Ghosts" by Grant Morrison (2005-2006): This is a series of Batman stories that feature a ghost-like character known as the "Gotham Ghost". This story arc takes place within the larger "Batman" storyline, and not as a standalone event.
* "The Ghosts of Gotham" by James Tynion IV (2020): This is a multi-issue Batman storyline, featuring the return of a character known as "the Ghost-Maker". While it doesn't involve ghosts in the traditional sense, it has a focus on Batman's legacy and the ghosts of his past.
* "The Ghosts" by James Robinson (2013-2015): This is a miniseries that features a group of ghostly heroes known as the "Ghosts". While this series is less well-known than some of the other options, it is a standalone story that exists within the DC universe.
To be more specific, please provide more context about the "Ghosts" event you're referring to. This could include:
* Characters: Are there specific characters or teams involved?
* Storyline: What are the main events or plot points?
* Year: Do you remember the approximate year this story took place?
Once you provide more details, I can give you a more precise answer!