The Violet Window.
We bring your attention to the photograph above, dubbed by me "the Violet Window," for it is here that the next installment of "The Photography in the Witch House", wherein Keziah lurks into the window.
First off, Gregg took photos of three old women and composited them together. When this was finished, he distorted the horrific image. The result achieved, Gregg ended up with this -
All that was left was to composite one image into another. Subtly, the image of the Arkham witch became visible...
Awesome work! Check out Gregg on DeviantART.