She's been out all night frightening policemen

A customer has been into the library raising Cain and spitting feathers about the book she'd just read.

"Filth," she snapped at Norma. "Absolute filth. What have you got to say about it."

"Well.. The Library Service doesn't write the books, we only buy them."

"Fancy wasting the taxpayer's money on filth like that. Disgraceful. Who do I complain to about this."

"You're doing a very good job of complaining to me about it, but if you want you can fill in one of our customer feedback forms and I'll make sure it gets given to the right person for them to reply to you."

"Hmpf. Well. I suppose that's good enough."

"Can I help you with anything else?"

"Have you anything else by the same author?"