WOW that is a bummer! 
A court document filed by Peter Falk’s daughter says the Emmy-winning actor, best known as TV detective Columbo, has Alzheimer’s disease.
Catherine Falk is seeking approval to act as a conservator – or legal guardian – so that she can manage the affairs of her father, 81.
She claims he is no longer able to recognise people.
I just remembered that his trade mark was coming back into the room asking a question like he FORGOT to ask it before, but didnt’ and was only harrassing the person. LOL