I Will Arise and Go Now

"Even if you deny it now, you have always been playing God. I am."

William Bell was a dying man. In fact, he considered himself already dead. But, he planned to pursue one more goal: creation. He believed his destiny was to be a god, and he planned to give rise to a new universe, of his own design, in order to achieve this.

He did.

(Set during/after S04E22 "Brave New World, Part 2" with a slight but significant alteration of events)