Rozencrantz the cat was hunting his digital prey, mostly interesting shadows and blowing leaves, as there were very few mice or insects to catch in The City.  He began to notice the humans acting strangely.  They stood very still, often in the middle of the street, an action he barely understood to mean their attention was elsewhere.  Then, they began to change, to slump or growl, to move in unnatural ways and behave oddly.  Rosencrantz didn’t understand what a ‘zombie’ was, but as panic erupted throughout The City, he slunk back into the shadows.  Shakespeare would know what to do.