I was showing an out-of-town friend around at Powell's and she mentioned that her husband liked mystery novels. This one caught my eye due to the investigative nature it presents to the reader. She surreptitiously bought two and gave one to me.

So now I'm reading it, and it reminds me of E: A Novel that I read many years ago: bookrastinating.com/book/359398/s/e

The pacing of reading a novel through the characters' email interactions is fast and compels you to "read just one more", so this one is turning out to be quite the page-turner so far.