History Foreshadowing / TheLockedTomb

** The most obvious and direct hint is that Gideon the First later cannot recall the conversation he has with Harrow after she pulls him from the incinerator--itself already used as a symbolic representation of Lyctorhood in ''Gideon the Ninth''--in which "he" told her how to avoid his own assassination attempts on her in the future, because this was actually Pyrrha doing so as thanks for Harrow saving them. He also admits to her that he "sometimes forgets [things]", which at first sounds like random bouts of memory loss, but makes a lot more sense knowing that he has no awareness of what's happening to his body when Pyrrha is using it.

** The most obvious and direct hint is that Gideon the First later cannot recall the conversation he has with Harrow after she pulls him from the incinerator--itself already used as a symbolic representation of Lyctorhood in ''Gideon the Ninth''--in which "he" told her how to avoid his own assassination attempts on her in the future, because this was actually Pyrrha doing so as thanks for Harrow saving them. When the real Gideon wakes up, he also admits to Harrow that he "sometimes forgets [things]", which at first sounds like random bouts of memory loss, but makes a lot more sense knowing that he has no awareness of what's happening to his body when Pyrrha is using it.

** The most obvious and direct hint is that Gideon the First later cannot recall the conversation he has with Harrow after she pulls him from the incinerator--itself already used as a symbolic representation of Lyctorhood in ''Gideon the Ninth''--in which "he" told her how to avoid his own assassination attempts on her in the future, because this was actually Pyrrha doing so as thanks for Harrow saving them.

** When Harrow first looks into the incinerator and sees Gideon the First locked inside, she observes that his eyes look dark because of the shadows of the room. They really ''are'' dark because they're Gideon's aforementioned original brown eyes that Pyrrha received when they ascended, and she's the one in control at the moment. Harrow also notices that the Saint of Duty is not using necromancy to try to save himself from the situation, instead lying helplessly with a wound to the chest, because Pyrrha, as a former cavalier, is not able to use necromancy herself, even when borrowing her adept's body.

** When Harrow first looks inside the incinerator and sees Gideon the First inside, she observes that his eyes look dark because of the shadows of the room. They really ''are'' dark because they're Gideon's aforementioned original brown eyes that Pyrrha received when they ascended, and she's the one in control at the moment. Harrow also notices that the Saint of Duty is not using necromancy to try to save himself from the situation, instead lying helplessly with a wound to the chest, because Pyrrha, as a former cavalier, is not able to use necromancy herself, even when borrowing her adept's body.

* Pyrrha Dve's appearance as the dominant soul in Gideon the First's body seems in the penultimate chapter seems like a LastEpisodeNewCharacter apparently from nowhere, but there are actually many small hints of her existence prior, going all the way back to the previous novel, with the notes referring to G. & P., the letters Commander Wake addresses to "YOU AND HIM", the fact that Gideon the First sometimes acts strangely compassionate towards Harrow, and the fact that Pyrrha borrows Gideon Nav's sunglasses in the climactic chapters before entering the Emperor's chambers to avoid revealing that her eyes are not green (as, since Gideon took her original green eyes upon ascending, she took his brown ones, which would have given her away immediately).

* Pyrrha Dve's appearance as the dominant soul in Gideon the First's body seems in the penultimate chapter seems like a LastEpisodeNewCharacter apparently from nowhere, but there are actually many small hints of her existence prior, going all the way back to the previous novel, with the notes referring to G. & P., the letters Commander Wake addresses to "YOU AND HIM", the fact that Gideon the First sometimes acts strangely compassionate towards Harrow, and the fact that Pyrrha borrows Gideon Nav's sunglasses in the climactic chapters before entering the Emperor's chambers to avoid revealing that her eyes are not green (as, since Gideon took her original green eyes, she took his brown ones, which would have given her away immediately).

** Similarly, in this same conversation, when "Gideon" tells Harrow how to properly set the blood wards, "he" says, "You'll be safe from '''us'''." Since the Saint of Duty himself is the only person on the Mithraeum who's been actively trying to kill Harrow so far, his use of the plural seems odd here, but is far more understandable knowing that this is Pyrrha speaking; though she herself has not tried to kill Harrow at all while using her necro's body, she's the only one who knows that there are actually two souls alive inside her adept's body, and thus thinks of herself and Gideon as a collective "we".

* Pyrrha Dve's appearance as the dominant soul in Gideon the First's body seems in the penultimate chapter seems like a LastEpisodeNewCharacter apparently from nowhere, but there are actually many small hints of her existence prior, going all the way back to the previous novel, with the notes referring to G. & P., the letters Commander Wake addresses to "YOU AND HIM", the fact that Gideon the First sometimes acts strangely compassionate towards Harrow, and the fact that Pyrrha borrows Gideon Nav's sunglasses in the climactic chapters before entering the Emperor's chambers to avoid revealing that her eyes are not green. The most obvious and direct hint is that Gideon the First later cannot recall the conversation he has with Harrow after she pulls him from the incinerator--itself already used as a symbolic representation of Lyctorhood in ''Gideon the Ninth''--in which "he" told her how to avoid his own assassination attempts on her in the future, because this was actually Pyrrha doing so as thanks for her saving them.

** At one point she tells Gideon that she feels like she's been "dying forever" due to her illness. It later turns out she's actually Saint Cytherea the First, who became a Lyctor to fight her House's hereditary blood cancer and ended up consigning herself to an eternity living on the edge of a painful, wasting death, with no natural end in sight. She's been living that way for around 10,000 years by that point in the story.

** After Magnus' and Abigail's corpses are found, the necromancers try to bring back their spirits. The only one that seems to have any success is Silas, but his summoning is interrupted when the effects of his ritual accidentally drains the already sick Dulcinea to the point of fainting, and Protesilaus breaks the ritual by punching him in the face. In truth, "Dulcinea" is much stronger than she appears, and Protesilaus is actually controlled directly by her. She likely interrupted the ritual in order to stop Silas from bringing back the victims' spirits and ask the mwho the killer was.

* In Harrow's second Act 5{{Elseworld}}, she is at a ball meant to find "Her Divine Highness" (implicitly Gideon) a spouse. There's no way for Harrow to know it yet, but that is, in fact, exactly what Gideon is--she might not actually have such a title, but she's the Emperor's daughter.

* When Gideon and the others leave Judith, Gideon's narration notes it's the last time she ever sees her alive, which still holds in ''Nona'' as she is no longer Gideon, and the Captain is [[DemonicPossession no longer herself]]

* When John explained who Blood of Eden were to Harrow, he gave her what he said was a vital piece of advice: once you walk away from something, you have no right to act as if you own it. ''Nona'' reveals that Blood of Eden are descended from the people who fled Earth, which enraged John.

* Asked what she thinks is sexy, Nona thinks of giant advertisement images of flowers. She is Alecto is Earth and flowers ''are'' the reproductive structures of Earth plants, so that may be a reflection of her association with the biosphere as a whole.

* Ianthe cryptically warns Gideon early on that it would be unwise to irritate the necromancer of the Third. The slip is notable because she says "''the'' necromancer", not "'a' necromancer." It's not until much, much later that it's revealed that Coronabeth isn't a necromancer.

* While explaining who "A.L." was to Harrow, John says at one point that she and the other Lyctors of the First are Alecto's children in a "very real way" and wouldn't be here if not for her. One of the revelations in ''Nona'' is that Alecto is the Earth, basically the mother of all humanity.

* Ianthe cryptically warns Gideon early on that it would be unwise to irritate the necromancer of the Third. The slip is notable because she says "necromanc''er''", not "necromanc''ers''." It's not until much, much later that it's revealed that Coronabeth isn't a necromancer.

* ||Gideon|| ORTUS the First's ability is briefly referenced in Act 2 when he crumbles several of Harrow's skeletons to dust before Harrow properly discovers in Act 3 that [[AntiMagic he can negate thanergy]].

* Ortus the First's ability is briefly referenced in Act 2 when he crumbles several of Harrow's skeletons to dust before Harrow properly discovers in Act 3 that [[AntiMagic he can negate thanergy]].

* Pyrrha Dve's appearance as the dominant soul in Gideon the First's body seems in the penultimate chapter seems like a LastEpisodeNewCharacter apparently from nowhere, but there are actually many small hints of her existence prior, going all the way back to the previous novel, with the notes referring to G. & P., the letters Commander Wake addresses to "YOU AND HIM", the fact that Gideon the First sometimes acts strangely compassionate towards Harrow, and the fact that Pyrrha borrows Gideon Nav's sunglasses in the climactic chapters before entering the Emperor's chambers to avoid revealing that her eyes are not green. The most obvious and direct hint is that Gideon the First cannot recall the conversation he has with Harrow after she pulls him from the incinerator, itself already used as a symbolic representation of Lyctorhood in ''Gideon the Ninth''.

** Once Harrow and Palamedes reveal to the other remaining Houses (the Second, Third, and Eighth) that Protesilaus was DeadAllAlong, Judith sarcastically asks if anyone else present wants to confess to already being dead or a flesh construct or anything similar. At this point, Dulcinea has been having a coughing fit from her illness and hacked up quite a bit of blood, and Gideon's narration snarks that she half-expects her to be added to the list as well. Then the twist at the climax confirms that, indeed, Dulcinea (that is, the real one) ''was'' already dead, just like her cavalier.