Samuel Spade’s jaw was long and bony, his chin a jutting v under the more flexible v of his mouth. His nostrils curved back to make another, smaller, v. His yellow-grey eyes were horizontal. The v motif was picked up again by thickish brows rising outward from twin creases above a hooked nose, and his pale brown hair grew down— from high flat temples—in a point on his forehead. He looked rather pleasantly like a blond satan.

He said to Effie Perine: “Yes, sweetheart?”

She was a lanky sunburned girl whose tan dress of thin woolen stuff clung to her with an effect of dampness. Her eyes were brown and playful in a shiny boyish face. She finished shutting the door behind her, leaned against it, and said: “There’s a girl wants to see you. Her name’s Wonderly.”

“A customer?”

“I guess so. You’ll want to see her anyway: she’s a knockout.”

I think those first couple of paragraphs introduce the characters rather well.

First chapter – First Paragraph Tuesday Intros is hosted by Diane at Bibliophile by the Sea.