What is Case Zero?

Look, we are pretty in the know most the time. We get tips, hints, secrets and the skinny. But not even we know what's up over at Tara Normal with this mysterious image promoting "Case Zero." Is this the secret origin of girl paranormal investigator Tara? Perhaps it's her "Year One" (as in Batman: Year One and not the crappy Jack Black/Michael Cera movie). Whatever the story may be, this teaser image from artist and Tara creator H.C. Noel has up veddy, veddy curious.