All things in nature are dark except where exposed by the light

"Crowley, preparing his art tools, waited for the model to sit.

He heard the soft brush of clothing and the stool creaking under someone's weight. Finally. Crowley turned around and the art tools fell from his hands.

There was an angel sitting in front of him.

It was a very particular angel, one he had become far too familiar with for the past few thousand years.

And he was naked."