Nine PM. People were leaving the meeting, mostly in groups of two or three. Some were chatting about the meeting, but most were talking about their plans for the weekend.  The man, simply known as “V,” moved the “Caution Wet Floor” sign once again before picking up his mop and going back to work on the floor. Damn high school kids, he thought. Dirtier than pigs. Truth is, he kind of enjoyed the repetitive, mind-numbing work. He kept his back hunched, head down, a baseball cap covering his eyes. No one ever noticed the janitor. It was the perfect cover.  Shame about the previous janitor. Luckily, when the school was desperate, V…