Thread: Dangerous situation

HI all only my second post, we need some suggestions, badly.

We live in a restored Federal style two story home that has an open Oak Bannister. The bannister goes to the second floor then goes back the same direction that it had ascended making an open (to the first floor) landing, this gives access to the second floor rooms.

This image would have Hugo walking the top rail, but I have been afraid to flash him at it for fear that in the moments between the flash and his eyes readjusting, could mean a Very Bad Fall. This bannister is 150 year old Oak his claws CANNOT get a grip on it so it is pads alone that keep him from a full one story fall onto, god know what, might be at the base of the stairs. I have seen him do this multiple times, and it scares my wife to death, and does me no good either. I cannot glue or nail anything to this bannister but nearly anything else is open.
P.S. while typing this . . .

Well he looks nuts here, but I just caught him in a meow. Please any suggestions welcome.
Mom, and Dad