Katie Leung, famous for her role in the Harry Potter series, will join Luke Thompson and Yerin Ha for Bridgerton season four

If Quinn’s novel is to be the basis for season four, we can expect a kind of Regency era, Cinderella-inspired tale. In the book, the young maid, Sophie, is forced to work as a servant for her stepmother, Araminta, and her two step-sisters after the death of her father, the Earl of Penwood.

When Araminta, Rosamund and Posy head to a masquerade ball, Sophie sneaks in, too – and meets Benedict. It’s love at first sight for the pair but, fearing that he won’t accept her for who she really is,…