Secret identity of alleged Craigslist killer revealed!

You can stop racking your brain over why Philip Markoff--an MD-to-be with a hot fiancee--would commit the heinous crimes Markoff allegedly did. As the Herald reports today, deep down, Markoff is really just a big dork. (The Globe explores his nerdiness, too, but not with the Herald's laser-like focus or lip-smacking relish.)

Also noteworthy: Markoff's BU med school peers won't talk to the press--except, that is, for the ex-med-school colleague whose recollections constitute the heart of the aforementioned Globe piece.