History Headscratchers / RiversOfLondon

** In Book Four, Peter says that prior to Ettersberg, the Folly was less closely associated with the Met as it was now and was more a social club for British wizards who served King and Empire however they chose. Some did research, some taught, others were cops. But being a unique specialist officer as he was (and a powerful one at that), it's not that much of a stretch for him to be both a cop and to be sent off to the far reaches of the Empire where needed.

** ''The Hanging Tree'' further reveals that [[spoiler: Tyburn's daughter lacks any apparent supernatural powers of her own, and her husband is reported to be a normal human. Although she expects to outlive both of them, Tyburn has ''let'' herself age in sync with her husband, and she and her sisters - at least, the one whose rivers existed pre-Great Stink - are implied to have been spontaneously generated from the lingering energies of Father Thames' deceased sons, manifesting in a new form and with new personalities under Mama Thames' influence.]]

** What the series has been hinting at since it started introducing other 'Fae' characters, and that Peter briefly muses on directly at a few points is that there's different extents to someone can be non-human. This ranges from the Rivers, who are basically gods without a capital 'G', to people like Zach, who is part human but has some kind of inherent magical nature (see Lesley talk about it in Broken Homes), to people like Isis, Oberon and [[spoiler: Melissa from book 5]] who used to be human or seem human but are also partly something else. It's probably that Tyburn's children inherited some magical traits, like the ability to smell magic (thus explaining the scene in Book Two mentioned above), but not the immortality and mutability that come with being a true Genius Loci.

** My reading of what Beverley meant was that Peter was not free to make a deal with the Queen because he 'belongs' to Bev. And one does not mess with the boyfriend of a shotgun-toting goddess of a small river in South London. But on the point about the faeries - the story left it hanging on what the point was of the changeling plot, or what was to prevent them simply coming back?

** Peter makes an off hand comment in ''Foxglove Summer'' that you can tell when Molly picks up the phone due to the "creepy ominous silence" on the other end. So obviously it picks up enough ambient noise to tell the difference between a dead line and no one speaking. And as above, if you here that, you just assume it's Molly and either leave a message or tell her what you need.

** The YellowPeril incident wasn't something Nightingale himself was involved in, it's something he'd heard about from his boss when ''he'' first joined the Folly.

** He's also pretty much in shock at that point, as he's simultaneously been betrayed by and failed to save his best friend. The only man who could actually talk him through his dilemma is laid up in the critical ward. He can't get into the Folly, and if he goes back to his previous station house, he'll probably get sacked officially. What else is he supposed to do, hang around Dr. Walid's office? Crashing at his parents' flat lets him pull himself together, physically and emotionally.

** Peter is still new to the whole supernatural at this point, his mentor has been shot, he's been pretty much fired at that point, has nobody really to turn to for advice, plus he is pretty exhausted at that point. He needs to rest and think and try to work out what to do, he hasn't really got anywhere else to go.