Harley Merlin Books in Order

Harley learns that Katherine plans to control Chaos through five rituals and threaten everyone she loves. When a valuable Bestiary monster escapes, Harley must test her growing powers while Astrid pursues her own fight against Katherine.

Harley searches for answers about her parents and her powers while fearing another attack from her aunt. Discovering that magical foster children are in danger, she joins Tatyana in a struggle to protect them despite the risks.

Casino worker Harley Merlin uses her empathy to spot cheaters, unaware of its magical origins. A monster encounter brings her into a secret coven, where clues to her past and a hidden traitor threaten both magicals and humans.

New coven member Harley investigates missing magical children and her aunt Katherine's plan to become a Child of Chaos. A traitor inside the coven and secrets in her parents' Grimoire complicate her efforts to protect her friends.

Finch seeks a key to the lost city while secretly searching for a way out of serving Erebus. Meanwhile, Raffe investigates the djinn's broken connection to the god, hoping to escape the curse threatening his future.

Arriving in Atlantis, Finch finds himself caught between its powerful inhabitants and the competing ambitions of Erebus and Davin. While Melody explores the ancient city's wonders, Finch must find a way to protect his trapped friends.

Erebus offers Finch freedom if he finds the Fountain of Youth, a demand that makes little sense for an immortal god. With his friends, Finch searches for an artifact needed to capture the ghost of Ponce de León.

Finch must return to hated Eris Island for the final ingredient needed to enter a lost city. While searching for escape from Erebus's control, he depends on Ryann, whose determination to help complicates her own relationship.

Stranded at a monastery on a Greek island, Finch must master magical maps that reveal legendary places. Brutal tests and rival treasure hunters force him to distinguish potential allies from people with more dangerous motives.

Harley's uncontrollable magic threatens to tear her apart, sending her to New Orleans in search of the Voodoo Queen. Risky bargains offer a chance to restore balance while Katherine's growing power creates an increasingly urgent threat.

Katherine plans to sacrifice twelve magicals in her final ritual, leaving Harley desperate to protect her friends. Her parents' Grimoire may contain a spell strong enough to stop Katherine, but its hidden pages refuse to yield their secrets.

Harley plans to infiltrate the Cult of Eris and reclaim her mother's soul before Katherine's next ritual. She must rely on her untrustworthy half-brother Finch while surviving initiation trials and hiding her intentions from watchful enemies.

Fleeing the Coven, Harley seeks her parents' Grimoire as a possible weapon against Katherine. With Finch, Wade and Garrett, she plans a theft while imprisoned friends and a nearly completed magical detector complicate the battle ahead.

Without magic, Harley turns to a final spell requiring a bargain with a Child of Chaos. Finch is willing to sacrifice everything to stop Katherine, while Katherine needs Harley's body to secure her own rise to power.

Finch embraces life in Atlantis and supports the woman he loves, but his friends remain caught in its troubles. Nash's rare Sanguine abilities make him a target, forcing him to protect Huntress while searching for a way to fight back.

Finch wants revenge on the powerful figures who have used him and a way back to the surface world. A necromancer, a demigod, and a threatened love potion complicate his attempt to reclaim control of his life.

As Atlantis rises from the depths under a supposed new savior, Finch and Harley face Davin's latest schemes. Their reunited friends must find a way into the changed city and challenge a dangerous claim to power.

Apparently powerless Persie unleashes a hydra on her eighteenth birthday and discovers her abilities stem from her mother's bargain with Leviathan. Seeking control, she secretly auditions for an Irish monster-hunting institute, but her gift carries dangerous expectations.

Persie enters the Basani Institute hoping monster-hunting lessons will help her control Leviathan's gift. When she releases a rare creature and students begin disappearing, her place at school becomes uncertain and the danger reaches far beyond her studies.

Confident in her training, Persie encounters a mysterious stranger whose beliefs oppose everything she stands for. His need for her help challenges her convictions, while Nathan hides secrets that could destroy the life he has built.