Episode six of the season, "The Way Ahead," depicts a scandal involving Prince Charles and Camilla Parker Bowles that rocked the royal family: Tampongate. While it seems as if something that cringe-worthy had to be made up for TV, it actually did happen.
In January 1993, a transcript of Charles and Camilla's phone calls was released to the public, which consisted of the two having an intimate conversation in 1989 while Parker Bowles was at home and the Prince was at a friend's house in the country, as reported by The LA Times. During the call, the secret lovers trade sweet nothings, but things eventually take a crude turn when Prince Charles says (via Entertainment Tonight), "I'll just live inside your trousers or something. It would be much easier!" Parker Bowles responds, "Oh, you're going to come back as a pair of knickers," to which Charles exclaims, "Or, God forbid, a Tampax. Just my luck!"
Besides causing scandal in royal circles (both Charles and Camilla were married to other people at the time), the leaked phone call led to Camilla's divorce from Andrew Parker Bowles, as reported by The Mirror.