Harrow the Ninth

What the hell was that?
I definitely did not expect my main question about Gideon to have this answer.
An I definitely don't get something about the Epilogue.
And it's such a bummer that Alecto is still unpublished and who knows when (if?) it will be.
I do hope that Nona is directly related to all this mess, maybe even making it a bit messier, but at this point, who cares.