And lo, on rewinding and screen-capturing, it is!
I haven't seen the film but it appears in a classroom scene where each student has a copy. A quick Wikipedia (and conversation with Rob) confirms that the books isn't an accidental choice; the film draws parallels with Harper Lee's story of the feared and mis-trusted Boo Radley in his shadowy existence, and that of the Casters, a breed of human capable of casting certain kinds of banned and rare spells, like changing the weather and casting illusions.
Described by Rob as 'flawed but enjoyable', as opposed to Twilight's 'po-faced horribleness', I think I have to watch it now! For the costumes alone...have you seen some of those dresses?
(Image © Alcon Entertainment)