Reading stash

Exploration Stage: Burned-out Estate
From: Eli Montague
Description: My wife is also innocent! I was at a book club. My wife always carries a spare key in a book with a stash. Please look for the book. It is not on fire. When my wife came home she saw the fire and gave the book to me, but in my panic I forgot where I put it...
Completed: It would have been as I said! If this had been in the house, it would have been burned along with the other books. My wife and her friends love detective novels and are passionate about these things. My wife made this secret box of keys herself and hid it among the books.