In 1974, a 29-year old woman was brutally murdered in a London basement.
The tragic death of Sandra Rivett, who worked as a nanny, came as a shock to people in the UK - and all over the world - because the main suspect was a well-known British aristocrat.
Richard John Bingham, also known as Lord Lucan, disappeared after allegedly murdering Sandra, who worked as his family's nanny. Although there have been apparent sightings of him all over the world, he has never officially been found. Now, photos of a mystery pensioner in Australia could be a "definite match" for the fugitive.