The Sign of the Four by Arthur Conan Doyle

“Mr. Sherlock Holmes—” I began, but the words had a most magical effect, for the window instantly slammed down, and within a minute the door was unbarred and open. Mr. Sherman was a lanky, lean old man, with stooping shoulders, a stringy neck, and blue-tinted glasses.

The Murder on the Links by Agatha Christie

Her rancour against the older woman showed plainly in her voice, and I could well understand that it must have been a bitter blow to her when her only son showed signs of falling in love with the daughter of her rival.