Dr. Sebastian Sallow was a well respected scientist that had made a name for himself as a rather soft spoken reserved man—one that was usually deemed a good man, who occasionally did shameful things.

But in the price of knowledge and discovery, it often seemed not enough and overtime, the man grew too bold, too careless—and it appeared the dark side of science was too much for even a man of his talent to shy away from.

And thus Sebastian's alter ego was born—a seductive, shameless man, a man without inhibition and a version of Sebastian he would rather never allow to show. But an alter ego doesn't like to stay hidden, not one thirsting for all that is evil and so it became a constant battle between the two.

This is where you come along—a young detective, fresh to the streets of London, investigating the recent disappearances and murders that are causing panic amongst the town folk—however, what you don't know is that you've gained more than just the attention of those unsure of your success.

It seemed that despite the alter ego's having little to agree upon—they did have one thing they shared, an obsession of sort and that obsession just happened to be you.