Paranormal Investigations

Leo Fey runs 'Paranormal Investigations', the problem is Leo doesn't believe in the paranormal and spends most of her time spying on spouses. Then, as her twenty fifth birthday draws closer, Leo realises the paranormal does exist - or so the zombies on the underground tell her.
Please note this is the original written-in-a-month Nanowrimo version. An updated, typo free version is also available.