No, Benedict does not find out who Sophie really is in Part 1.

What Benedict Knows in Part 1

  • He knows he is strongly attracted to Sophie and deeply affected by her.
  • He also knows he is obsessed with the mysterious “Lady in Silver” from the masquerade ball and has been searching for her.
  • However, he does not connect that Sophie and the Lady in Silver are the same person by the end of Part 1.

A typical example is their stairwell encounter: he kisses her and then asks her to be his mistress, which clearly shows desire but also proves he still sees her as a maid, not as the high‑status masked woman he once danced with.

How Part 1 Ends for Ben & Sophie

  • Part 1 closes with Benedict asking Sophie to become his mistress, which shocks and hurts her.
  • Her secret identity as the Lady in Silver remains hidden from him at this point; the tension is that viewers know the truth, but he does not.
  • The setup clearly points to a later reveal in future episodes/parts rather than in Part 1.

So if you’re watching Part 1 and wondering, “does Benedict find out who Sophie is in part 1?” — the answer is firmly: not yet.

Information gathered from public forums or data available on the internet and portrayed here.