Unmarked spoilers for Gideon the Ninth and Harrow the Ninth ahead
- Building off that, she's specifically the RB of Earth—John's second name is Gaius (the male form of Gaia, which is what the Greek/Roman primordial goddess of earth is called), and he used to call her One/the First, which could be because Earth is the First House.
- Why would an angry planet ghost care if some tiny human ate another human's soul? Something's up with the creation of the Beasts during the Resurrection, the missing one, and the River behaving like the Emperor is one of them. They're nightmare monsters that kill everything in their way, but the Emperor was lying when he said they pursue Lyctors — they're only after him, and seem to go after Lyctors only because he keeps putting them between him and the Beasts. (Although various Lyctors have managed to lure Beasts into dangerous places, like Cyrus getting one to chase him into a black hole, this could easily be explained by the Lyctors engaging first, after which the Beasts would naturally want to finish the fight.)
- Nothing states that Anastasia ever left the Ninth, and a few of Aiglamene's comments that are somewhat cryptic might make sense if she is connected to Anastasia. Anastasia's partial Lyctorhood could've conferred stranger properties to her immortality, or required her to Body Surf to continue her duty.
- Whether it's used to resurrect Gideon for real or simply for more blood to open the Tomb.
- For Hell magic, Ianthe is one of the only necromancers shown to not have any kind of necromantic specialty, despite discussing her interest in liminal magic ("I'm interested in the place between death and life ... the place between release and disappearance. The place over the river.") and has a noted fixation on Hell (Ianthe always wanted everything brought back to liminal spaces and Hell [...]). Augustine alludes to siphoning drawing power from Hell, but even God (supposedly) doesn't really know what Hell is like. With Ianthe as the last full Lyctor in the service of the Emperor, it would make sense that she might cultivate a unique specialty.
- For Heaven magic, Abigail expresses the belief that there are vast untapped domains of spirit magic based on the belief that there is a place beyond the River ("[...] There is a whole school of necromancy we cannot begin to touch until we acknowledge its existence"), and that the current state of the River is due to it being messed up (presumably by necromancy). It's even less clear what Heaven magic would entail, but could be the ultimate source of John's ability to resurrect people.
- Not only are Lyctors (which John is, in addition to his other abilities) an example of Our Liches Are Different, John himself briefly mentions something interesting about Anastasia and Samael, the only other example of the supposed perfect Lyctorhood that he possesses: "She hadn't got his soul inside her all the way— if she had, Samael dying would have killed her too." As far as the method goes, it's already known that even immortals can't survive a black hole, which Domincus will turn into if the Emperor dies for too long, or possibly sinking below the stoma layer into Hell.
- This could ultimately lead to a pay off for "An afterlife subscription to Palamedes Sextus' Top Nerd Facts" and actually has some support with the "astonishingly shitty book" Palamedes is stuck with in his River bubble: the protagonist Abella is noted as being too skinny, Palamedes says he's fond of a spoiled swordswoman that the narrative is unkind to, and Abella ultimately ends up with "an insanely tedious widower" who's husband "ate a grenade in the war".
- Following Harrow the Ninth: unclear. Multiple living Lyctors were involved with Blood of Eden, but Anastasia's fate is unclear enough that she might be tied into their inception 5,000 years ago.
- Unclear; her status is tied to her (supposedly) failed ascension, but Anastasia remains very shrouded in mystery and the missing Beast is not addressed
- Unclear after Harrow the Ninth. Mercy makes mention of examining Gideon's corpse, which might mean it was never actually missing, but Harrow doesn't notice any extra corpse aboard the Erebos, and Mercy is a traitor to the Emperor working with Blood of Eden, leaving the location of her body still unclear.
- Not only is the Moon missing from all descriptions of the First, but John's preferred term for Alecto is "Annabel Lee", and the line of the poem that references the Moon is his favorite. Besides that, she was his cavalier, and the orbit of the Moon around the Earth could be said to mimic the bond of a necromancer and cavalier.
- Muir also has a way of writing around harder sci-fi concepts, and this would also avoid the complications of underground oceans and ground that melts into air even in the perpetual chill of the Ninth, and could ultimately also tie into the missing Resurrection Beast.
- A note from someone at Canaan House (likely Cyrus), included at the end of the Sermon on Necromancers and Cavaliers mentions they created the phrase "One flesh, one end".
- Augustine refers to Cris as a "fanatic" and that it was her "influence" over Alfred that led to him changing in some way.
- Augustine also mentions that he has spent a myriad telling himself he could have "talked [Alfred] out of it", and it's peripherally mentioned that his Lyctorhood, despite being the first Saint to ascend, was very rushed and hurried, which might happen if Alfred mortally wounded himself to force Augustine to use his soul or have it be wasted (much like Gideon).
What leaves this as a theory instead of one of Muir's more buried hints is that there is some rather hefty contradictory evidence as well:
- All components of the Eightfold Word were worked on presumably before the first ascension, meaning it was unlikely to be a surprise to those involved.
- Teacher also says that the acolytes deliberately searched for a form of immortality that would allow them to range apart from the Emperor, further supporting the above.
It's possible that there's some reconcillation between these two contradictory lines of evidence, such as the original plan for cavaliers to be consumed being random House recruits and not necessarily loved ones, but there's no evidence to suggest such a thing was ever discussed. And, with the Lyctors in question dead, it's unclear if there will ever be an answer given to clarify what exactly happened between Alfred and Cristabel.
- Confirmed, minus the bit about being missing, though he's noted to be the most reclusive of the Lyctors.
- Confirmed, though the eyes are an indicator of her relationship to Alecto, not Commander Wake
- Gained some support from the added content for the paperback edition, where even the Cohort's intelligence services have no idea what's going on in the Ninth. It seems likely that if someone were to want to hide a child within the Nine Houses, the Ninth is possibly the only place that would be feasible.
- Confirmed, though Gideon wasn't taken to the Ninth to be hidden, but as a weapon to open the tomb
- Mostly confirmed. The majority of Act 5 is from her perspective, but she remains with the First and this comes very deep into the book.
- Slightly off base, but mostly confirmed. The Sixth do not make up a huge portion of the book, but Camilla is a member of Blood of Eden, and Palamedes did have some plans set up prior to his death.
- Confirmed: The Emperor quotes extensively from Earth culture up to the modern day, and Commander Wake refers to Domincus as "my long-lost natal star".
Beyond that, there are several distinctions made between the Lyctorhood process and true immortality, which seems to be solely reserved for the Emperor and possibly the girl within the Locked Tomb. Teacher makes a distinction in Chapter 8 between the two when referring to the origin of the Lyctors. Additionally, scrap of paper Gideon finds with her name on it implies that the Lyctorhood process was viewed as "incomplete" by the original eight, but that "Gideon" perfected it. Cytherea also makes a few mysterious remarks about Gideon after she reveals that she is a Lyctor, the most intriguing of which is "...You're not going to die here Gideon. And if you ask me to let you live you might not have to die at all."
- Jossed. While there's not an answer yet as to how she survived the nerve gas meant to kill her, she truly did die, and Mercymorn makes mention of her corpse.
- "Poor child," [Teacher] said, "we're all sorry. We never intended this to happen, none of us. The poor child."Gideon might have been the child in question; she might've not. She strongly did not care either way.
- Jossed, but not entirely off base; Gideon is the daughter of Alecto's necromancer.
- Jossed, she's a separate character.
[WMG: Corona will become the new Reverend Mother of the Ninth following her breakdown]]
- Jossed, she joins up with Blood of Eden
- Jossed, his plans involve Harrow, though Gideon's spirit briefly appears during his meeting with Harrow.
- Jossed, it was Earth All Along, though the missing moon remains unstated.
- Jossed, Number One is mentioned to be one of the dead beasts by Mercy briefly in Chapter 36 of Harrow the Ninth. The missing beast is either Number Three, Number Five, or Number Nine.