New Delhi: Many humans across the globe commit crimes - some simple and most of them serious and a handful, heinous - and they get punishments according to the degree of crime they commit, based on laws established by societies.

But some are, according to law courts, "rarest of rare" crimes which makes humanity hang its head in shame. Such cases are a tight slap on the face of human race, because of their heinous nature.

Today, we take a tragic case which came to light in the small town of Amstetten, Austria in 2008.

A case which ashamed all human beings and brought a father-daughter relationship to abysmal depths.

The case of Psycho father Josef Fritzl and her daughter Elisabeth.