I sat down with Gerard and we brainstormed, and the children...

I sat down with Gerard and we brainstormed, and the children being stolen started coming in as a motif, so we started stealing some of the aesthetics from 'The City of Lost Children' sort of that surreal atmosphere. The Watchers and the resistance, that was always in my head, but it got more refined. Gerard was helping me get the details down so it would feel right. It came together after that. We just started honing it until it felt like it was all working.