Is There a Mind Behind the Lifts?

In bed midnight, i suddenly heard the lifts going in this ten story tar block on my own. I went into a round ron each floor to see if there was anybody in the building. And there was absolutely nothing. But this happened a few more times, where i could hear the lifts coming up, doors opening. These were not sophisticated lifts where you could see what floor it was on. Whether it was the sixth floor or not, i'd like to be able to tell you but there was no get down there in time. So remember, garry is entirely alone.