Natasha Lee has been searching for her sister for nearly 30 years. Here she talks to Sky on the day that Missing People launch a campaign to improve provision for the families of the missing.
Katrice disappeared from a Naafi shopping complex in Schloss Neuhaus, Paderborn in Germany on 28 November 1981. She was just two years old. Her sister, Natasha, and her parents, who lived nearby at the time, have never lost hope that they will find out what happened to Katrice.
Also featured is Teri Blythe who has produced an age progression of what Katrice may look like today.