Book Beginnings: The Dead in Their Vaulted Arches

For this week's Book Beginnings on Friday, I'm looking at one of Alan Bradley's Flavia de Luce novels, The Dead in Their Vaulted Arches. Here are the first lines from the book's Prologue:

"Your mother has been found."
Nearly a week after he had made it, Father's shocking announcement was still ringing in my ears.
Harriet! Harriet found! Who could believe it?
Harriet, who had been lost in a mountaineering accident when I was barely a year old; Harriet, whom I can't remember seeing, ever, with my own eyes.
My reaction?
Numbness, I'm afraid.

Initial Thoughts:
I read the first of the Flavia books, The Sweetness at the Bottom of the Pie, when it first came out back in 2009. Haven't read any of the others -- the one I'm quoting from here is No. 6, so I'm supposing I'll be doing some catching up with all the characters. I had forgotten about Flavia's lost mother, so hearing that she'd been found was sort of a double surprise. I enjoyed the first book, and so far I'm having fun with this one, too.

Rose City Reader hosts Book Beginnings on Fridays. As she says, the idea is to post the first sentence (or so) of the book you're currently reading, along with any first impressions or thoughts you have about the book, the author, etc.  It's a wonderful way of adding new books to your must-read list, and a chance to connect with other readers and bloggers.