I looked for forever and I couldn't find Madison's diary. Quite disapointing, I was looking foward to that quest :(
It's in the safe in the bedroom. You can get the combination by inspecting various items in the bedroom for clues.
The only thing I can seem to inspect in the master bedroom is the gastronomy book. Am I spposed to use something on it, or am I missing something?
Right, it tells you there's something etched into the book cover. Find the piece of paper in the study, and the pencil in the spare room. Use the paper on the book, and then the pencil on the paper.