Being the good house-sitter that you are, you politely ask Fat Cat to sit while you clean up the milk. As you turn to grab the threadbare hand towel off the counter, you see out of the corner of your eye a shadowy gray mass slinking its way towards your feet.
"Sorry, Mugsy. Beat you to it."
Mugsy greets Fat Cat with a slight flick of the tail then sits stone-still against the pantry door watching you carefully, hoping you miss a spot.
You scrub the floor, reaching both under the table and below the cabinet, picking up more than just milk- dirt, lint, cat fur... and what's this- a small stick? No, it's a key- a very old skeleton key that must have fallen off the rack by the back door. This old farmhouse has too many old keys. Having cleaned up the mess, you toss the rag into a nearby bucket and examine the key. You look up and examine the key rack, too, noting that every key that was there the night before is still in its proper place.

What do you want to do next?
A. Set the key on the counter and go walk the dog. Go to Page 6.
B. Open the door to let Fat Cat walk himself. Take the key and try to find its lock. Go to Page 7.