Who is Sophie Baek in Bridgerton season 4? Sophie Baek is the leading lady in the fourth season of Bridgerton, but who is the character and who plays her? ‌Who is Sophie Baek in Bridgerton? View 3 Images Sophie Baek is actually called Sophie Beckett in the books (Image: NETFLIX)‌Bridgerton fans flood Netflix with same comment as Season 4 finally drops READ MORE :Bridgerton season 4 episode count and when new episodes will be released READ MORE :In Quinn's book series, Sophie Beckett (Baek) is the illegitimate daughter of the Earl of Penwood and his maid, with whom he had an affair. ‌Who plays Sophie Baek in Bridgerton Season 4?