Caitlyn and her friends have returned to Jude’s Sorcerous Academy, but all is not well in the school. The Great Houses of Shallot are on the verge of going to war, and the conflict is spilling into the school; in the background, powerful and secretive forces prepare to finally reveal their plans to reshape the world. Caught in the middle, torn between her family and her friends - and burdened with a secret she dares not share - Cat must unlock the secret of the Zero Equation...or watch helplessly as her family, friends, and school are destroyed by war.

Caitlyn Aguirre is no magician - but that doesn't make her useless. After discovering her true talent and uncovering the long-lost secret behind Objects of Power, Cat returns to school - intent on showing everyone what she can do. But her mere existence is a threat to the balance of power, convincing some to befriend her, some to try to use her...and some to remove her.

Five months after the House War, the city of Shallot is on edge. The Great Houses plot and plan against one another, while the magicians rebuild and the common folk fear another outburst of fighting. And one young nobleman has a plan. Rebecca is a half-caste shopgirl in an apothecary, dreaming of an apprenticeship that will allow her to rise out of poverty and finally make a name for herself in a city that has no use for her kind.

Caitlyn Aguirre should have been a magician. Her family certainly expected her to be a magician. But by the time she reached her 12th birthday, Caitlyn hadn't even managed to cast a single spell! In desperation, her parents send her - and her magical sisters - to Jude's Sorcerous Academy, her last best chance to discover her powers. But as she struggles to survive her classes without a single spell to her name, Caitlyn starts to uncover an ancient mystery that may prove the key to her true powers....

The Kingdom of Zangaria has fallen into civil war. On one side, King Randor and his forces, determined to impose his rule over the entire kingdom; on another, the noblemen who want to crush the king; on a third, Princess Alassa and the Levellers. Caught in the middle, Emily must steer a course between her loyalty to her friend, her duty to people who put their faith in her, and her fears for the future. But King Randor has unleashed forces even he may be unable to control....

The kingdom of Zangaria teeters on the edge of civil war. The nobles are plotting another coup, the merchants are demanding political representation and a say in government, and the peasants are on the verge of outright revolt. Everyone is preparing for war. And when a deadly secret from the past resurfaces at the worst possible moment, Princess Alassa, one of Emily's closest friends, finds herself having to make a choice that will put her at the center of the storm and determine the future of the kingdom … Or see everything she loves destroyed in the fires of civil war.

The Kingdom of Zangaria has finally started its descent into civil war. King Randor has declared martial law, imprisoned the pregnant Crown Princess Alassa in the Tower of Alexis, and started preparations for a first strike against his enemies. The time has come for everyone to choose a side. Emily has arrived in Alexis with the intention of freeing Alassa before her father can have her executed. But as Emily and her friends are drawn into a maelstrom of rebellious factions and crown loyalists, they find themselves faced with an insolvable problem.

Frieda is one of Emily’s closest friends, a young girl she saved from Mountaintop and brought back to Whitehall. But Frieda found herself the victim of a deadly soul-destroying plot - and the true target may well be Emily herself. Now, after Emily saved Frieda from a magician who was slowly driving her mad, Frieda stands accused of attempted murder - and worse. She must now stand trial for her crimes. Worse, Fulvia - Matriarch of House Ashworth - has returned. Humiliated by Emily years ago, Fulvia burns for revenge - and the chance to regain her lost power.

The post of Head Girl of Whitehall looks fantastic on anyone's resume. It places the lucky winner on equal terms to the staff, granting them authority, power, and responsibility that no other student can even dream of possessing. Naturally, Emily doesn't want it. But when she returns to Whitehall for her sixth and final year, she discovers that the staff has elected her to the post - and refusal isn't an option. Reluctantly, she starts to carry out her new duties, unaware that deadly enemies are waiting in the shadows, preparing themselves to strike at her when her back is turned.

The war is over. But the scars remain. Emily's New Learning has been good for Beneficence. In the years since she arrived on the Nameless World, the city has been at the forefront of technological advancement and social development. Thousands of newcomers are moving to the city, railways span the gorge and drive into Zangaria, the first steamboats are plowing the ocean wave and a whole new banking system is reshaping national and international trade. A true golden age appears to be on hand. But all is not well.

In The Promised Lie, the first book of the new series, five years have passed since the earth-shattering events of Bookworm IV. The Golden City has fallen. The Grand Sorcerer and Court Wizards are dead. The Empire they ruled is nothing more than a memory, a golden age lost in the civil wars as kings and princes battle for supremacy. And only a handful of trained magicians remain alive. 

A plot is being hatched at Mountaintop Academy, a plot that threatens the lives of Emily and her friends...and the integrity of the Allied Lands. In a desperate bid to uncover the secrets of Mountaintop and recover her stolen notes, Emily goes undercover into Mountaintop, a mission that may cost her everything.

In the summer between second and third year at Whitehall, Emily accompanies Lady Barb on her rounds of the Cairngorm Mountains, bringing magical help to the locals and searching for new magicians. For Emily, tired and broken after the events of Study in Slaughter, it should be a chance to relax as well as to visit a new part of the Nameless World, to put her responsibilities aside and just be herself. But the locals aren't quite what she expects, with problems of their own, and Lady Barb is a different person away from Whitehall.

After a brief visit to the Blighted Lands in hopes of recovering something useful from Shadye's Dark Fortress, Emily returns to Whitehall for her fourth year, bracing herself for the exams that will determine her future. But as she resumes her education, she discovers that the shadows of the past are hanging over the school. A teacher wants to break her, some of her friends are acting oddly, and, worst of all, a boy intends to court her.

Brimming with new ideas for magical research, Emily returns to Whitehall School for her second year of magical education, looking forward to returning to her studies. And yet things are different; her new roommates harbor their secrets, her old friends are becoming distracted by sports and games, and one of the teachers seems to dislike her. As she starts new classes, she discovers she has to work far harder to keep her place in the school. But her second year will be far more adventurous than her first.