Lord Backwater tells me that I may place implicit reliance upon your judgment and discretion.
Your Majesty has indeed committed an indiscretion.
I understand that this gentleman, your friend, is a man of honour and discretion, whom I may trust with a matter of the most extreme importance.
"A certain selection and discretion must be used in producing a realistic effect," remarked Holmes.
You have been recommended to me, Mr. Hatherley, as being a man who is not only proficient in his profession but is also discreet and capable of preserving a secret.
I rely upon you not only to be discreet and to refrain from all gossip upon the matter but, above all, to preserve this coronet with every possible precaution because I need not say that a great public scandal would be caused if any harm were to befall it.
It is not necessary that I should prolong a narrative which has already run to too great a length by telling how we broke the sad news to the terrified girl, how we conveyed her by the morning train to the care of her good aunt at Harrow, of how the slow process of official inquiry came to the conclusion that the doctor met his fate while indiscreetly playing with a dangerous pet.