"Yes, I am perfectly capable of doing magic. Well, as capable as someone can be, with three weeks of exposure."

But better than the average student with as much time, by virtue of a photographic memory for spells.

"It is faintly complicated, but I am fairly sure it is a seperate reality entirely. I am a detective, by trade, on an international level, and I can find little indication of my existence. This would not be entirely impossible; I always cover my tracks, and in the future I might have decided to eliminate record of my existence completely. Or it might mean that there is simply no such thing as L in the here and now."