The Zero Enigma Books in Order

Twelve-year-old Caitlyn cannot cast a spell, despite her family's expectations. Sent to a sorcery academy with her gifted sisters, she struggles through classes while uncovering an ancient mystery that may explain her apparent lack of magic.

Caitlyn returns to school determined to use her unusual talent, but her discoveries threaten powerful interests. When a deadly plot targets her and her friends, she must outthink enemies who would rather control or eliminate her.

Rebecca hopes an apprenticeship will lift her out of poverty in Shallot. When her apothecary master accepts a mysterious nobleman's commission, she becomes entangled with criminals and political schemes that could overturn the city's powerful families.

Twelve-year-old Isabella is sent into exile at remote Kirkhaven Hall after being branded a traitor. As she adjusts to life with two older exiles, mysterious intruders and nighttime shadows reveal dangers hidden within her new home.

Caitlyn returns to an academy increasingly divided by the rivalries of Shallot's Great Houses. Torn between friends and family, she must solve the Zero Equation while secretive forces prepare to turn the approaching war to their advantage.

Caitlyn and Akin's approaching marriage is meant to keep their rival families at peace. Opponents within House Rubén challenge Akin's inheritance, forcing him into a contest that could destroy both his future and the fragile alliance.

New graduate Adam Mortimer joins the Kingsmen to investigate terrorists in a city nearing revolution. As dangerous devices appear in Shallot, old friendships and new duties test his loyalties while he tries to protect those he loves.

Lucy returns home after her father's death to find House Lamplighter drowning in debt and losing its influence. Determined to save her family, she risks what remains on plans that may restore its fortunes or finish its collapse.

Akin Rubén's approaching marriage is meant to preserve an uneasy alliance between rival houses. His exiled sister's discovery of another Zero threatens that arrangement, drawing both siblings into a struggle over family power and their city's future.

Caitlyn Aguirre once uncovered the secret behind an empire's collapse and knew it must remain hidden. Strange activity in the ruined Eternal City forces her to return while political tensions at home make the stakes even higher.