Engrossing mystery...impossible to put down! I had many favorite quotes, but didn't stop to write them, which may be one of this book's most telling features! I can't say a lot without spoilers, but suffice it to say that I now wish to receive mysterious notes, find my life to be a puzzle that all fits together, believe that every person acts as they do for a reason, and definitely, re-read "A Wrinkle in Time."