[ There seems to be something else to this case, but professionalism prevents him from enquiring further. And remaining here will only complicate the problem... ]

I see. [ He fishes his flashlight out from his pocket where it had been. ] If you require anything, my phone line is always open.

[ ... he means it medically, of course. ] Have a good... night, then. Remember to attend your classes.

[ Luckily the stairs are still there, so he carefully picks his way down. ]