The Swimming Pool - Mary Roberts Rinehart
""Don't tell me," he said. "I know. The guy is a private eye. He keeps a fifth of Scotch in a drawer of his desk, he's blackjacked and goes about his business instead of being taken to a hospital where he belongs, and he solves the crime when the cops are running in circles."
In spite of myself, I had to laugh.
"Not quite," I said. "My detective is a woman."
He looked really disgusted then…