Having to protect his long-standing Council enemy from the other Wardens makes Harry unsure if he should be Shouting Out, or just shouting mad. But even if he can't break the frame on Morgan, at least he'll try his darnedest to break his record for pop-culture references in this, the 11th novel of The Dresden Files.
Contemplating the importance of exonerating Morgan and convicting the real traitor, Harry sums up the sort of irrefutable case he'll need to present to the Council:
Harry tells Injun Joe that he wants to die by being "stepped on by an elephant while having sex with identical triplet cheerleaders", which is a reference to The Chronicles of Amber. Corwin also wants to die by being stepped on by an elephant while having sex.
The Wardens are seen walking in a group like in The Right Stuff in Vince's surveillance photos.
Tales of skinwalkers are darker than the tales of The Brothers Grimm, the ones that haven't been prettied up by Disney and the like. The actual presence of one nearby, according to Harry, would make the environment feel Tales from the Darkside-creepy to him.
Morgan, of all people, chews Harry out for acting like a bloody superhero. None specified, but for Morgan even to know there are such things probably rates as Genre Savvy for a workaholic senior wizard.
Luccio quotes Highlander, which surprises Harry because she'd told him she fell asleep at the drive-in.
Having his head bandaged makes Harry feel like the fife player from Willard's iconic painting, Spirit of '76.
Murphy, analyzing the opposition, deduces that he or she is not some kind of James Bond supervillain.
When Vince reveals where Binder is going, Harry asks if he's the Amazing Kreskin.
Running her hand along the Silver Wraith's fender, Murphy says she's not a material girl, but damn.
Realizing Mouse was only acting injured, Harry marvels that maybe he should have named the Foo dog Denzel.
Harry points out that the Fairy Tales of the brothers Grimm nearly always take place in a forest, because forests can be scary places. Aside from the mostly-open oak woods where Robin Hood movies and Shakespeare adaptations are filmed, that is.
Molly asks permission to come aboard the Water Beetle, because it's what they do on Star Trek.
Harry teaches Molly the basics of piloting the vessel, although he's hardly Horatio Hornblower himself.
The White Court strike team drops from their helicopter with as much grace and coordination as the Cirque du Soleil.
Madeline quotes Hamlet when she's about to kill Harry. Possibly also a Call Back to when Lord Raith made the same "flights of angels sing you to your rest" reference in Blood Rites when he was about to kill Thomas, (especially since both Raith and Madeline end up being raped to psychic slavery/death by Lara), or maybe it's just a family habit.