The Last Waltz (S02E05)

As the Annual Servants' Ball approaches at 165 Eaton Place, Mr. Pritchard finds himself swept up in a romance with Miss Whisset, sparking thoughts about life beyond servitude. With the threat of war on the horizon, Harry presents Beryl with an enticing proposal, but a startling revelation jeopardizes their future. Meanwhile, Lady Persie and Sir Hallam carry on with their passionate affair, but Sir Hallam is soon to realize the extent of the damage his choices have caused.