Haunted Mansion

{Inspired by the ever-popular Neopets roleplays} In the year 2006, the government rounded up supernaturals from all over the world and placed them in environments where they could not do any harm. Wizards, witches, vampires, zombies and werewolves were all "safely" relocated to separate parts of the country, where they would be surveyed by government agents. These supposed safe houses, intimidating in their appearances, were designed to keep the inhabitants in, and outsiders out.
Large and impregnable from the inside and the out, the specially built mansions could accommodate up to one-hundred supernaturals each, providing them with a comfy enough lifestyle in exchange for their freedom.
But is everything really as simple as it seems? Recently, supernaturals at the houses have been going missing, and still others have been found dead. Who could be doing this? Is it the government, or is there another sinister plot afoot?
And how for much much longer will these safe houses remain safe?