But you did not come back

Marceline Loridan-Ivens was just 15 when she and her father were arrested and sent to concentration camps.

He prepared her for the worst, telling her that he would not return.

The three kilometres between her father in Auschwitz and herself in Birkenau were an insurmountable distance, and yet he managed to send her a small note via an electrician in the camp - a sign of life.

Here, Marceline writes a letter to the father she would never know as an adult, and the man whose death enveloped her whole life.

Her testimony is a haunting and challenging reminder of one of the worst crimes humanity has ever seen, and an affecting personal story of a woman whose life was shattered and never totally rebuilt.