When a rogue assassin starts taking heads in the Hundred Halls, no one is safe, not even the teachers. Zayn leads his team as they investigate the gruesome deaths. The search draws them to dangerous places: the infamous Black Council and the opulent casino of pain run by the Diamond Court. As leads dry up, and heads roll, leaving them no closer to the truth, Zayn must make a terrible choice involving the people who he cares about most.

Even a master assassin can be foiled. Divination—the magic of seeing the future—provides peace in the realms, because no one can launch a war or assassination without being discovered. But when a strange building appears in the city of sorcery, everyone believes it's benign—everyone except Zayn and his teammates. To save the Hundred Halls, they must use all their talents to deceive and uncover its purpose before it's too late.

The dragons are coming.Without a head patron to protect the city, the Hundred Halls are vulnerable to the most dangerous supernatural creatures of all—the dragons. But the Circle of the Scale is not the only problem. Deep beneath the city other dangers lurk, setting in motion a confrontation that will force Zayn to make a decision between the Halls and his family.

Even the best plans fail. Zayn has spent his whole life preparing for the final confrontation with the Lady of Varna, but as the day grows closer, complications multiply. When he realizes he can no longer trust his cousin, or his patron—nor does he want to get his teammates killed—it means he must finish his quest alone. But the Lady of Varna has been alive for millennia because she has a supernatural knack for avoiding even the most cunning plans. If Zayn is going to solve this impossible conundrum, he's going to have to get help from an unlikely source and accept the price of his failures.

There are many ways to die at the Hundred Halls. Pax Nygard has spent her childhood at the world's most dangerous zoo, and has a psychic fox named Kali as her companion, so she should be well prepared for the challenges that await her at the Animalians Hall. But when mysterious deaths at the local zoo and a dangerous rival create issues, she realizes it's the two legged kind of creature for which she lacks the skills to interact. If she can't learn to navigate the intricacies of human drama, while mastering the skills the hall teaches, then it will be her final year—in school and life.

Every Hunter has a bane—but not everyone survives the hunt. In the city of sorcery, a dangerous beastie is on the loose, killing the unwary, but Pax and her friends are forbidden to investigate. As she throws herself into becoming a Hunter, which include perilous visits to backwater Fae training grounds, she suspects that her professor and the new kid aren't telling the truth about their tragic pasts. As the year progresses, Pax's concerns about the killer escalate, until she's drawn into a final hunt that will lead to at least one of their number not surviving the year.

To learn the art of field work, Pax and her friends head to the jungles of Danir where the local fauna presents dangerous challenges to scientists reviving the defunct magesteel trade. But mysterious deaths, conflicts with the Phoenix Corporation agents, and environmental spasms that mirror an ancient apocalypse put the entire class in danger. Pax and her friends must navigate local political intrigue and solve ecological mysteries if they want to survive their third year at Animalians.

Desperate for answers about herself and Kali, Pax heads to northern Norway to visit her Baba, where she learns things about her companion that changes their relationship. The conflict between them simmers beneath the surface as they investigate strange happenings with the ecology of the tundra and unravel the history of a group she meets called the Descendants of Bastet. As the true purpose of her existence with Kali is revealed, Pax must unravel the knot that has formed between them while hunting down a fearsome enemy out of the mists of myth.

The world's most dangerous zoo provides attendees the experience of a lifetime: witnessing the fearsome manticore feeding, or the speedy mystdrakon race across its dome at blurring speeds, or the pack of brutal fyrehounds hunting across a sandy landscape—all within the safety of the highly secure domes. But success breeds complacency… Pax and her friends are attending the grand opening of the newest section of the park: Other Realms. Intent on bringing in a new horde of attendees, the zoo custodians are opening up new domes with supernatural creatures that inspire nightmares and challenge the very limits of security. When the presence of a single, unique creature upsets the carefully constructed and overlapping systems that protect the guests, a cascade of failures turns the exciting day into a fight for survival.

Destiny calls when you least expect. After five harrowing years in the Hundred Halls surviving dangerous supernatural threats, our group of young mages have each taken their own paths away from the university. But the recently returned Head Patron, Invictus, has need of their skills. Brought together under the banner of The Order of Merlin, these mages must survive everything their teacher throws at them—and each other—to become the team the world needs. Otherwise they don't stand a chance against the imminent demonic invasion.