It's been a long time coming, but Bridgerton season 4 is finally here! Major spoilers are ahead from Bridgerton season 4 part 1! Yerin Ha as Sophie Baek in episode 402 of Bridgerton | Liam Daniel/NetflixBoth of Sophie's parents passed away in Bridgerton season 4The fourth season doesn't start delving into Sophie's backstory until episode 2. Once she learns from Lord Penwood (Sophie's father) that Sophie is his daughter, her demeanor immediately changes. There will likely be more flashbacks to Sophie's past in the upcoming Bridgerton season 4 part 2.