The Bridgerton drought is over. Netflix's hit regency romance has returned for its fourth season, which sees the second Bridgerton son, Benedict (played by Luke Thompson) stepping into the narrative's leading role. While Anthony and Kate's love story was at the heart of season two, the actors' busy schedules limited their screen time and the characters only appear in the season's final episode (which won't air until part two of the season drops on February 26). Of course, this also frees up screen time for season four's new additions, which include Benedict's love interest, Sophie (played by Yerin Ha), as well as three more new characters: Lady Araminta Gun, Rosamund Li and Posy Li. Ahead, a guide to all the cast and characters you need to know in Bridgerton season four.