The Book in Brief
Two years after Red Sister, Nona trains in Mystic Class while hiding the demon Keot and weathering the hostility of powerful families. Kettle pursues Yisht’s trail as Abbess Glass maneuvers against Sherzal and the emperor’s court. Nona’s enemies use the Inquisition and the Noi-Guin to imprison and interrogate her; she survives on Path power, convent training and allies with unclean motives. With the convent’s shipheart stolen by Yisht and drawn into Sherzal’s design, Nona, Zole and Kettle walk into a palace trap involving the emperor, the Church and private assassins — and Sherzal’s scheme collapses, at a price.
Important Characters
Nona Grey: A novice with rare Path abilities, fierce loyalty, and a demon amplifying her anger.
Abbess Glass: Sweet Mercy’s political strategist, willing to risk reputation and life to constrain Sherzal.
Sister Kettle: A Grey Sister and one of the book’s viewpoints, who drives the covert thread and the Tetragode rescue.
Sister Apple: A poisoner, teacher, and Kettle’s partner, whose investigation opens the novel’s covert thread.
Zole: A powerful ice-triber whose rivalry with Nona develops into trust.
Clera: Nona’s former friend, compromised by money, resentment, and Sherzal’s influence.
Yisht: A formidable fighter who stole the shipheart and serves Sherzal’s plan.
Keot: A demon within Nona who urges violence while exposing desires she would rather deny.
What to Remember from the Previous Book
Nona entered Sweet Mercy after nearly being hanged, formed intense friendships, and discovered unusual speed and Path potential. Raymel Tacsis used a demon against her and killed Hessa. Nona killed Raymel, while Abbess Glass protected her by converting the crisis into a political victory.
Prologue
A future confrontation shows Nona and Zole facing overwhelming force, framing the book around the cost of reaching that alliance.
Mystic Class and the Inquisition
Chapter 1
Sister Apple follows signs left by the missing Kettle and recognizes that Sherzal’s agents are operating close to the convent.
Chapter 2
Nona, older and more skilled, trains in Mystic Class while concealing the demon Keot inside her.
Chapter 3
Keot comments on Nona’s fear and anger, tempting her to treat every insult as permission for violence.
Chapter 4
A classroom contest reveals Nona’s growing control of speed and the Path but also the danger of pride.
Chapter 5
Ara remains Nona’s emotional anchor as new rivalries test the friendships formed in Red Class.
Chapter 6
Zole’s disciplined power challenges Nona without the social cruelty used by wealthier novices.
Chapter 7
The convent’s teachers disagree over whether Nona should be protected, trained harder, or used politically.
Chapter 8
News of the narrowing Corridor makes distant war part of daily life at Sweet Mercy.
Chapter 9
Abbess Glass begins a court strategy that depends on appearing weaker and more isolated than she is.
Chapter 10
Nona’s enemies connect her to Raymel’s death and search for a legal route around the convent’s protection.
Chapter 11
In Shade class, Apple’s lesson turns to disguise ahead of the Shade Trial — a test of hiding in plain sight that seems built to be impossible for a novice with Nona’s black eyes and missing shadow — while Joeli’s needling and Keot’s whispered urging toward violence test her control.
Chapter 12
Nona’s control slips during a confrontation, giving Keot more influence and her enemies more evidence.
Flight and the Tetragode
Chapter 13
The Inquisition moves against Nona under authority powerful enough to challenge Abbess Glass.
Chapter 14
Glass allows events to proceed because open resistance would expose the convent before her larger plan is ready.
Chapter 15
Nona is removed from the familiar protection of Sweet Mercy and learns how little law restrains elite violence.
Chapter 16
The Noi-Guin hold Nona in the Tetragode, collared with sigils that choke off the Path and her flaw-blades.
Chapter 17
A Noi-Guin assassin studies Nona as prey and makes clear that formal proceedings are only part of the threat.
Chapter 18
Keot offers immediate violent solutions, while Nona tries to preserve enough control to recognize an escape.
Chapter 19
Under arrest for heresy, Glass works the jurisdiction herself from inside custody: a former High Inquisitor cannot be dragged to the Tower of Inquiry, so venue and judges must bend around her — exactly as she intends.
Chapter 20
Nona uses training from several convent disciplines, proving that survival depends on more than raw Path talent.
Chapter 21
The escape begins through a narrow opportunity created by the captors’ confidence in their own systems.
Chapter 22
Nona turns confinement against the guards and reaches allies without fully surrendering to Keot.
Chapter 23
Pursuit transforms the escape into a running battle across territory controlled by Sherzal’s supporters.
Chapter 24
Zole’s intervention changes Nona’s understanding of the ice-triber from competitor to dependable ally.
Chapter 25
The fugitives learn that the shipheart and Sherzal’s palace, not Nona’s trial alone, are the true center of the plot.
Glass on Trial at Sherzal’s Palace
Chapter 26
Glass’s trial convenes not at the emperor’s court but at Sherzal’s own palace, and Glass — guilty plea and dispensation in hand — turns the hearing around to place Sherzal’s theft of the shipheart under scrutiny.
Chapter 27
Nona and her companions approach the palace through routes that demand stealth rather than open power.
Chapter 28
Apple’s search and Kettle’s captivity converge with the novices’ mission.
Chapter 29
Yisht guards the stolen shipheart and proves capable of matching the convent’s best fighters.
Chapter 30
Clera reappears on Sherzal’s side, forcing Nona to face betrayal without reducing their former friendship to a lie.
Chapter 31
The palace gathering brings Church, imperial, convent, and private interests into one unstable room.
Chapter 32
Sherzal tries to convert control of the shipheart into control over the emperor and the moon’s machinery.
Chapter 33
Glass exposes enough of the scheme to shift the legal and political balance without revealing every preparation.
Chapter 34
Combat breaks out as Sherzal’s agents move from manipulation to assassination.
Chapter 35
Nona reaches for the Path under extreme pressure and discovers a scale of power she cannot yet sustain safely.
Chapter 36
Zole and Nona coordinate their abilities, replacing rivalry with a practical form of trust.
Chapter 37
Kettle and Zole reach Nona in the Tetragode, but rescue does not erase the damage done during captivity.
Chapter 38
Clera’s choices save and endanger Nona in the same sequence, leaving their relationship unresolved.
Chapter 39
The shipheart becomes active in a way that threatens everyone who believed it could be treated as an object.
Escape and the Frame Returns
Chapter 40
Zole steals the Noi-Guin’s shipheart from the Tetragode and the two carry it clear while palace forces pursue them — Sweet Mercy’s stays with Sherzal.
Chapter 41
The Path offers escape but magnifies physical and spiritual risk with every step.
Chapter 42
Kettle and Apple fight to protect the novices and preserve a route back to Sweet Mercy.
Chapter 43
Glass’s political gamble succeeds narrowly, proving that apparent surrender was part of her attack.
Chapter 44
Sherzal survives the collapse of her plan and redirects attention toward the approaching war.
Chapter 45
Nona confronts the cost of using Keot and begins to separate her own anger from the demon’s appetite.
Chapter 46
The survivors return changed, with trust strengthened in some relationships and permanently broken in others.
Chapter 47
The stolen shipheart remains the key to future power as the Corridor’s crisis moves from rumor to immediate threat.
Epilogue
The frame returns to Lano Tacsis’s future assault on Sweet Mercy, its resolution held over for the final book.
Ending Explained
Abbess Glass survives because her legal humiliation was strategic: by entering Sherzal’s arena and controlling exactly what evidence appeared when, she strips Sherzal of the power to destroy Sweet Mercy openly. Nona and Zole’s cooperation matters more than either girl’s individual strength — an alliance that anticipates the final book’s argument that survival requires people formed by different communities to share risk. And Clera is left neither restored nor condemned: her compromises teach Nona the series’ hardest lesson, that love can remain real after trust becomes unsafe.
Themes and Analysis
Education as power. Sweet Mercy teaches violence, ethics, politics, and self-knowledge as inseparable disciplines.
Institutional protection. The convent saves vulnerable girls, but it also decides when their danger is strategically useful.
Anger and agency. Keot gives Nona’s rage a separate voice, forcing her to identify which violent impulses are truly hers.
Trust after betrayal. The book distinguishes affection from reliability through Clera, Glass, and shifting alliances.
Content Notes
This book contains graphic fantasy violence, torture, imprisonment and coercive interrogation, child endangerment, and religious and political abuse of power.
