'If you meet Ruth or Edek or Bronia, you must tell them I'm going to Switzerland to find their mother. They meet a ragged orphan boy, Jan, who treasures a paperknife - a silver sword - which was entrusted to him by an escaped prisoner of war.

'If you meet Ruth or Edek or Bronia, you must tell them I'm going to Switzerland to find their mother. They meet a ragged orphan boy, Jan, who treasures a paperknife - a silver sword - which was entrusted to him by an escaped prisoner of war.