Strange Case of Dr. Jekyll and Mr. Hyde by Robert Louis Stevenson (excerpt)

There was a pause, during which Mr. Utterson struggled with himself. “Why did you compare them, Guest?” he inquired suddenly.

“Well, sir,” returned the clerk, “there’s a rather singular resemblance; the two hands are in many points identical: only differently sloped.”

“Rather quaint,” said Utterson.

“It is, as you say, rather quaint,” returned Guest.

“I wouldn’t speak of this note, you know,” said the master.

But no sooner was Mr. Utterson alone that night than he locked the note into his safe, where it reposed from that time forward. “What!” he thought. “Henry Jekyll forge for a murderer!” And his blood ran cold in his veins.