72 years later: The horrific story of Hamburg's 'House of Horrors' finally revealed

After the Holocaust, Greta searched tirelessly for her brother Walter. A man she knew said he had seen him during one of the death marches. But it was only 72 years later that she discovered the horrific truth: Walter had been brutally murdered along with 19 other children in what became known as Hamburg’s “House of Horrors.”