Back in 1974, 29-year-old Sandra Rivett was brutally murdered in a London basement. Her killer was never arrested but was widely believed to be well-known British aristocrat Richard John Bingham, also known as Lord Lucan.
Lord Lucan disappeared after the alleged murder of Ms. Rivett, who worked as his family's nanny. Despite there being apparent sightings of him all over the world, he has never been found or put on trial.