Reading progress update: I've read 43 out of 352 pages.

Sleepyhead: Narcolepsy, Neuroscience and the Search for a Good Night - Henry Nicholls

Early in - not even up to chapter 2 yet, but so far, it's really good. I have a vested interest in the subject, but the author states up front that the book is aimed at investigating general sleep disorders, not just narcolepsy, and so far, this is proving to be the case.