Announcement: All puzzles are being delayed because my Puzzling notebook with all of my keys disappeared. :/ -- Mithrandir
Some hours after discovering this devastating loss, Mithrandir went to bed. Still moping over his missing notebook, he didn't notice the piece of paper on his pillow at first. But when he picked it up, he realised that it might contain the secret to getting his keys back!
So, Mithrandir, by this time you must have discovered the loss of your precious notebook. Cunningly hidden within this message is both the name of the person who stole it and the place where they've hidden it. (It was me, of course.) Mithrandir, if you figure out where I put your notebook, then you really are the master of puzzles. Oh, and don't forget to count. Never mind diamonds or powers of two or any of your other puzzles; this one should be easy. Succeed, and recover your notebook; fail, and it burns. That's all you've got. Enjoy the challenge, but you must hurry. Remember, I have your keys!
Frantically Mithrandir read the note again and again, trying to find the two hidden pieces of information within it. In case he doesn't manage to calm down enough to think about it logically, can you help him to find the hidden solution?
Who wrote the ransom note, and (more importantly) where is Mithrandir's notebook?