At the dawn of their adolescence, on the eve of the summer solstice, four young girls—Helena, Leonie, Niamh and Elle—took the oath to join Her Majesty's Royal Coven, established by Queen Elizabeth I as a covert government department. Now, decades later, the witch community is still reeling from a civil war and Helena is the reigning High Priestess of the organization. Yet Helena is the only one of her friend group still enmeshed in the stale bureaucracy of HMRC.

Walden is good at her job—no, Walden is great at her job. But demons are masters of manipulation. It’s her responsibility to keep her school with its six hundred students and centuries-old legacy safe. And it’s possible the entity Walden most needs to keep her school safe from—is herself.

Crown Prince Silvyr Quilen is the family disappointment. His father, High King Keryth Quilen of Athowen, wanted a son to follow in his image of an elven warlord who rules with no regard for those around him and will do anything to maintain his power. However, the king finds Silvyr's desire to spend his days in the flowers and libraries to be pathetic and useless. Despite that, Silvyr strives to receive his father's approval.

Healer Anja regularly drinks poison. Not to die, but to save—seeking cures for those everyone else has given up on. But a summons from the King interrupts her quiet, herb-obsessed life. His daughter, Snow, is dying, and he hopes Anja’s unorthodox methods can save her. Aided by a taciturn guard, a narcissistic cat, and a passion for the scientific method, Anja rushes to treat Snow, but nothing seems to work. That is, until she finds a secret world, hidden inside a magic mirror. This dark realm may hold the key to what is making Snow sick. Or it might be the thing that kills them all.

“Back then, when I was a young woman, there were still witches”: That was how Nana Alba always began the stories she told her great-granddaughter Minerva—stories that have stayed with Minerva all her life. Perhaps that’s why Minerva has become a graduate student focused on the history of horror literature and is researching the life of Beatrice Tremblay, an obscure author of macabre tales.