(Source: A Day by Day Chronology of Mr. Sherlock Holmes according to Zeisler and Christ, compiled by William S Dorn.)
July 18, 1889: Lady Hilda retrieved the missing letter from beneath Eduardo Lucas’s floor. [SECO]
The lady sprang to her feet, with the colour all dashed in an instant from her beautiful face. Her eyes glazed – she tottered – I thought that she would faint. Then with a grand effort she rallied from the shock, and a supreme astonishment and indignation chased every other expression from her features.
“You – you insult me, Mr. Holmes.”
“Come, come, madam, it is useless. Give up the letter.”
She darted to the bell.
“The butler shall show you out.”
“Do not ring, Lady Hilda. If you do, then all my earnest efforts to avoid a scandal will be frustrated. Give up the letter, and all will be set right. If you will work with me, I can arrange everything. If you work against me, I must expose you.”
She stood grandly defiant, a queenly figure, her eyes fixed upon his as if she would read his very soul. Her hand was on the bell, but she had forborne to ring it.
“You are trying to frighten me. It is not a very manly thing, Mr. Holmes, to come here and browbeat a woman. You say that you know something. What is it that you know?”
“Pray sit down, madam. You will hurt yourself there if you fall. I will not speak until you sit down. Thank you.”
“I give you five minutes, Mr. Holmes.”
“One is enough, Lady Hilda. I know of your visit to Eduardo Lucas, and of your giving him this document, of your ingenious return to the room last night, and of the manner in which you took the letter from the hiding-place under the carpet.”