A detective RP sounds very creative. I want to make a suggestion along those lines using your handy 'skeleton':
Name: Sleuth
Subject: Detectives/The Supernatural
Description: A detective (and his/her crew?) are working on solving a string of mystery crimes they call 'White Noise'. While this is happening, they come across and underground race of freaks of nature (eg: nymphs, nekos, half-breeds, werewolves, vampires, etc). They then deal with their new setting in the supernatural world, and what would happen if they were to betray its secrets to the general public...
Time Period set in: present/late 1990s.
Alternate Universe?: Yes or no. It totally depends... Realistic settings or not?
Characteristics: Society is basically set up as usual, but the underground creatures usually linger after dark or in dark alleys and bars. Nobody knows about the supernaturals.
Layout: A large city or something (didn't really know what you meant by layout)
Other: Not much to say except the detectives are part of a modern police force. Project 'White Noise' does end up with an underground culprit.
Good or bad evolvementation of this plot? I enjoy sleuth and mysteries as much as the next... L... Haha?