I mean one of the most confusing Fae plots there is in the books- which is saying something- is Mab and Titania opposing each other while the Denarians are running around in Small Favour...
It's not just the Summer/Winter sub-plot that's puzzling.
The Denarian plot is aimed at the Archive. They take Marcone so Gard will get Dresden to invoke the Accords and call for an arbiter who will inevitably be the Archive.
I'm puzzled as to why Mab involved herself: if she hadn't sent Harry after Marcone, that whole "get to the Archive" sequence fails, but it's pretty clear that the snatch against Marcone -- if it succeeded in itself -- would be "legal" under the Accords, so... why does Mab even
care, since it is legal??!? It only becomes an issue
because Mab makes Harry her Emissary to recover Marcone, which is what leads to Gard getting Harry to invoke the Accords.
It appears that Mab and Vadderung are playing a game against the Denarians here; possibly this is where they loop-in Marcone, for the sting operation in
Skin Game?
But this begs the question, how did Mab and/or Vadderung get sufficient intel (against the secretly-held plans of
Denarians! those Fallen should know what it takes to keep their plans secret!) to figure out that Ivy was the target? It's that Denarian target of Ivy, that gives Mab the opportunity to get things rolling.
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Then there's the Summer/Winter thing ...
It could be no more than Mab doing her part in the anti-Nic plotting... then Summer acting (in an almost-automatic, reflexive manner) to thwart/oppose Winter... then Winter taking steps to counter Summer... move and counter-move; and the whole thing turning Harry into a Big Bad Wolf for the Gruffs to hand his ass back to him, and so on.
Or maybe it was something else. Honestly, I suspect (
strongly suspect!) so. But I'm not sure
what else, beyond the Mab+Odin anti-Nic plot above. I
think I see Mab's angle. I don't see Titania's.
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... The Book also has direct Archangel power confirmation that Lucifer himself was acting in alliance with the Denarians ...
Lucifer and the Denarians are all Fallen Angels. WoJ says Lucifer doesn't like or trust those particular Fallen, and (at least part of) the reason they're in the Coins is to keep them away from Lucifer and unable to plot effectively against him. But at the end of the day, they're all Fallen Angels; that's their "side."
... So there is atleast one significant occaision Mab and Lucifer. Fae and Hell. Working together.
No...
Lucifer "helped" (that is to say, a massive Hellfire-fueled pentacle was used, from which Harry decides Lucifer must have been involved; but I suspect a Fallen-Angel / Wizard (such as Namshiel; or even a 5some of them) could have summoned and used that much Hellfire without aid from The Big L; so "maybe") to snatch Marcone, and capture the Archive.
But Mab acted in opposition, to undo those things. Not a Mab/Hell team-up
at all!
Unless you're suggesting the whole operation was a shadow-show, staged for the benefit of (impact upon) Dresden, Marcone, & co...?