"Sleep No More" by Seanan McGuire

"Sleep No More" by Seanan McGuire
    https://www.amazon.com/Sleep-No-More-Seanan-McGuire/dp/0756416841/
Book number seventeen of an eighteen book dark fantasy series. I read the well printed and well bound MMPB published by DAW in 2023.  I will buy future October Daye stories when the MMPBs are released.
Many hundreds of years ago, the many of the fae left a far off land and landed on what would become the west coast of the United States.  There they built their realms and fought their wars, both on the land and the sea.  The humans do not know of their realms and their travels but, humans do not see everything.  This is the fae's story.
In the beginning there was the Three of the fae.  Oberon, the King of the fae and his two Queen sister wives: Maeve and Titania.  All of the fae are descended from them, both together and singly.  They are the most powerful, way more powerful than their children, the Firstborn. All three of the first are missing and have not been seen in hundreds of years.  But Luidaeg, the Firstborn sea witch, has been dragging an old man around everywhere she goes.
Before Oberon disappeared, he put a gaes on Titania to stop killing their descendants.  Titania had grown jealous and heartless, and was encouraging her children and their children to kill Maeve's children and their children.  Titania had succeeded in genociding entire races like the Luidaeg's Roane.
October and her older sister August are being raised by their pureblood father Simon Torquille and mother Amandine in a large stone tower in the Faerie.  October's real father is a human so she is a changeling, looked down upon and often killed without reason by the purebloods.  But October is protected by other purebloods by August and Simon.  October is looking forward to August leaving so she can go with her, still protected.
But everything is a lie.
Please note that although the author and I share the same middle and
last names, I do not know if we are related.  We are McGuire's, there
are many of us.  I paid for my book and all of the books that I own
written by her.
There is a wiki for the October Daye books at:
    https://october-daye.fandom.com/wiki/October_Daye_Wiki
The author has a website at:
    https://www.seananmcguire.com/
My rating: 5.0 of 5 stars
Amazon rating: 4.7 out of 5 stars (1,252 reviews)
Lynn