My review -
Matt is somewhat hung-over and longing to reach his floor in the building where he works, just so he can sink a coffee. Three other people enter the lift with him, people he doesn’t know, and the lift goes up to the top floor, the sixth. This is where their nightmare begins. The doors open onto a different world. We follow their experiences which form a wonderful, classic set of sci-fi of scenes.
This novella is long enough to get to grips with the different scenarios but quickly establishes the fearful, apparently inescapable predicament they find themselves in. It makes you want to take the stairs in future. An excellent read.