Fantasy

Nix excels at world-building, which, as usual, is showcased in Saturday. Sorceress Saturday's realm is beautifully worked, with new classes of Denizen's, new personalities and gorgeously depicted scenery.
Saturday is also the most clear moral play of the books discussing the motivations and trustworthiness of the Will, the Old One, and Arthur himself as he progressively becomes less human.
However, I agree with other reviewers -- this reads like a work unfinished. Every other book contained gaining both the Will and the Key of that day, except Saturday. There is not really a clear contextual reason for the book to end -- it is neither a conclusion, nor a major cliffhanger, simply the book concludes. ( )

In which Arthur faces down the penultimate villain and we learn why the House is being destroyed. This is a great read, especially as Arthur begins to really struggle with his mood/personality shifts as he becomes something more. ( )

I like the visuals around Saturday's realm. It's one of the better ones when it comes to motivation and the idea of a gigantic clockwork tower stretching upwards... cool.

On the other hand, we saw even less of Saturday than we did of Friday, which is saying something. I think she and Arthur were in the same scene for maybe a half dozen paragraphs? It's a bit weird. I assume we'll see more of her in the next book, but it's something of a departure.

Back on Earth, things continue to escalate. Did Nix really drop a nuke on the city? Looks like. It's an interesting move. I'm betting time travel shenanigans will be involved in the finale.

Speaking of the finale, the Will still hasn't caused nearly as much trouble as I expected. It keeps building up and then... nothing. At least nothing big. Another for Sunday I guess. ( )

The penultimate book in the series finds Arthur battling Superior Saturday for her key. She's always had her eye on Lord Sunday's demesne. Action-packed. Arthur has let go of his avoidance of using magic, which is good because he needs it. However, due to this, he's struggling with staying 'himself'. The desire for power and a superiority complex is growing in him as he tries to fight it. His "I just want to go home" mantra is over, which is great because that was annoying. ( )