It's hard to believe that Josef Fritzl raped his daughter for 24 years and had 7 children in a cellar , and no one knew about it...

Elisabeth Fritzl's cries for help from the cellar where she spent 24 years imprisoned by her father could be heard by those living above, a new book reveals. 

It had been assumed the walls of the cellar must have been soundproofed for Josef Fritzl's secret family to have gone unnoticed for so long. 

But The Crimes of Josef Fritzl: Uncovering the Truth reveals they were not - implying the tenants living above the cellar must have been able to hear Elisabeth's screams as she endured 3,000 rapes by her father. More...

See also:

1. Josef Fritzl sentenced to die in prison...
2. Josef Fritzl returns to his infamous cellar...
3. Josef Fritzl, the monster of Amstetten, having fun in Thailand...
4. The Fritzl horror in Amstetten: How could this go undetected for 24 years?