I used to clean and care for a lady who I'm convinced must have given someone the idea of Hyacinth Bouquet.
She had all of her faculties, as did her husband, who was a spritely 78 years old.
They didn't have a physical relationship, and bickered constantly.
They had book shelves in their living room, directly behind where this lady sat, so I squeezed in behind her and asked if it was ok to put the books on her table for her to decide what to do with them.
I started taking out some books, and behind them was a whole hidden layer, containing very, very graphic pornography - books and homemade videos, extremely compromising photos, and love letters. (Him and his wife's homehelp!)
I thought I was going to faint!