Nightingale's face expresses grave doubt that he would be anyone's favourite, and yet-- "Narnia is from a book series," he says slowly. "A very famous one. And Shen Qingqiu told me he'd been sucked into a story. And of course there are Arthurians here." He stands up and starts pacing.

"Les Miserables!" he near-yells after several turns around the room. "Isn't that about the student uprisings in France? Enjolras and Grantaire! I've not read it but I think that's right. If it is right, then Aziraphale won't be able to conjure a copy." He looks to be on the verge of running out in search of an angel right at this moment, but restrains himself with some difficulty.