From 11:00PM PDT on Friday, July 1 until 5:00AM PDT on Saturday, July 2, the Shmoop engineering elves will be making tweaks and improvements to the site. That means Shmoop will be unavailable for use during that time. Thanks for your patience!
Marlowe asks her the same questions he asked the girl at Geiger's shop, but this time, the woman knows the answers. She catches on that Marlowe is asking a trick question because the book he wants doesn't exist.
She gives up the goods, and Marlowe gets a physical description of Geiger from the woman.
As Marlowe leaves the bookstore, it starts to rain. He opens the package he'd been holding. It's exactly what he thought it would be: pornography.
Geiger's racket is obvious by now. The guy loans out pornographic books from the back room of his store, fronting the whole operation as a rare bookstore.