A T.v. detective a day 4

I think the murderers mistake with MISs MaRple, is to always presume her a fool (this could be said i suppose for some of the other greats, dick van dyke, Columbo etc etc)  well don't do that 'cos she knows everything...There have been a few MIss Marples over the years, including Hyacinthe Boucket, but i think Joan Hickson will always be my fav, it's the eyes...uowah...she creeps me out...