FULL MARKS TO MR COCKROACH

I have no idea how he (or she, but we'll say it's a male) got here, but when I left my office yesterday a huge cockroach was walking across the floor.
Remember the office is on the sixth floor, and I'm pretty sure he must have come up in one of the six lifts. Seemingly without a care in the world I watched for a short while as he made his way towards one of the lifts, waiting patiently for the door to open. It was as if he knew that sooner or later the door would open to another world.
At that point another lift door opened and I got in. I wonder what happened to him?