That sounds very much how I feel about Frenchman's Creek. I enjoy it very much up until the end. The first time I read it, I even thought I must have misunderstood something, and I read the last bit again. But the ending is still perfectly valid, just not my personal preference.

Read Invisible Library today.

The first chapter is really weird? It's like its own little short story that does nothing for the rest of the book at all, and doesn't seem to relate to anything. Maybe it was supposed to be like an establishing shot of a movie, to give an overview? But why should we have to have an overview? There's nothing about the universe or protagonist in that first chapter which we don't get perfectly well later... Well, I know it's a series. Perhaps something from that first chapter will show up in all the other books and you have to read them in order to catch it.
It's weird to start the story in a place never visited again, with supporting cast that doesn't seem ever relevant again, over a heist never again referenced for a mcguffin that doesn't appear anywhere else in the novel.
Unless I'm missing something big (and I did finish the book entirely today, so I've read the whole thing now), the novel would have been quite fine without the first chapter at all.
(Further, since it seemed to have nothing to do with anything, it meant that I started the rest of the novel constantly waiting for it to turn highly episodic, or for the first bit to show up again at all, anywhere, and waiting for the other shoe to drop the whole rest of the novel. It was distracting and detracted from the rest of the story, really.)

So.... my conclusion is: this book would be better if you read it starting from chapter 2.

However, I did have fun with it.
So it's worth reading.

Just start at the second chapter.

So I have now finished also "The Masked City" (another of the Invisible Library books).
I'm enjoying them -as library books.
I don't think I'll track down and purchase them, though. I don't really feel the need to reread them. They were enjoyable, though. I might write down that author as someone to pay attention to again later when I'm done with the current stack of TBR books (every few years it actually gets gone through entirely, then I go look at those author lists and add their new works to it and create a new list of TBR titles)

I've also looked up more of the works by the author of the "Trailer Park Fae" book. Apparently she's got a number of works out already, but at least two of the series are written in 1st person so I've skipped those.
Went instead for "the Damnation Affair", "The Iron Wyrm Affair", "The Red Plague Affair" and "The Ripper Affair".
Which I've finished and read through, now. Mixed feelings. I think I like Trailer Park Fae better than any of the others, and of the others I prefer the last three named (which are part of a series), over the first one (which despite having the same naming convention might be in the same world but is unconnected with the others).

Now I'm reading "Slay and Rescue", but it has been a lot of books with magic in a row. So I'm going back to Michael Gilbert again afterwards.

So far I can manage with my donuts, but thanks!

I am still reading the LSD book, I doubt that I will finish it this year..

Yes, but it was a while back :) It stands for Lysergic acid diethylamide, it is a drug