Ken Warner Books in Order

After revealing an extraordinary power during her black-belt test, Katana enters a world of magical martial arts. Her teacher’s long struggle against the secretive Arashi draws her toward a dangerous enemy seeking the power to become immortal.

The Arashi steal a scroll containing the secret of immortality, then prepare to attack Katana’s school for the knowledge needed to use it. As the masters attempt to stop them, Katana must rapidly develop her own unusual abilities.

Katana’s growing power attracts scrutiny at her magical martial-arts school while an assassin hunts the Arashi. As concealed episodes from the school’s past emerge, she must question her teachers and decide how to fight without becoming like her enemy.

The ancient lord Jaaku discovers Katana’s identity and seeks her immense energy as the key to immortality. Confined to her school for protection, she must master new powers before its defenses fail and her enemy reaches her.

With Jaaku closing in, Katana searches dangerous deserts and forgotten temples for the legendary sword that might defeat him. Her final confrontation demands that she face her deepest fear and accept the identity she has struggled to understand.

After a devastating attack on Washington, Sydney Hastings discovers people are disappearing while officials deny the danger. Her investigation follows hidden technology and vanishing witnesses across the country, exposing an alien plan that makes humanity itself the target.

After surviving an impossible fall, Jaden Kwan develops a power that sends him and his twin sister fleeing armed pursuers. Ancient monuments, secret experiments and clues in their own blood draw them into a conspiracy threatening humanity.

Reunited with their allies, Jaden and Malia Kwan pursue an enemy targeting Salvatore’s people. Their investigation reveals that human-alien hybrids have penetrated the American government, forcing the twins to confront a secret organization preparing to seize global power.

Escaping a devastated Earth, Jaden and Malia Kwan become stranded near Mars and discover secrets beneath its surface. Captivity and betrayal entangle them in a struggle involving ancient rulers and earthly conspirators, testing their bond and hopes of saving others.

An unknown entity called the Sphinx plans to destroy humanity, leaving Jaden and Malia Kwan with urgent questions and few clear leads. They must discover who is behind the threat, where it is based and how to stop it.

Stranded in a world ruled by Axis powers and manipulated by Martians, Jaden and Malia seek a scientist who might send them home. Rival factions hunt the twins for their abilities while their scattered allies face another looming attack.

A dimensional shockwave throws Jaden and Malia into an alternate world where the Axis won the war and aliens operate unseen. Familiar people hold unfamiliar loyalties, and the twins must resist those who want to exploit their extraordinary abilities.

Newly appointed chief mage Khaldun discovers an artifact through which the imprisoned necromancer Nyro can speak to him. As military aggression spreads and a traitor emerges at the university, his allies fear the war conceals a plan for her escape.

As the Collective seeks recognition from world governments, an attack disrupts its summit and Melissa Kwan vanishes. More disappearances follow, sending Jaden and Malia in search of an enemy using unfamiliar technology before they become its next targets.

Jezebel seeks help for her cousin, Princess Allison, who is possessed by a demon no healer can remove. Guided by the wizard Khaldun, she uncovers suppressed history and signs that an ancient empress’s terrifying power is awakening again.

Back in their own universe, Jaden and Malia discover the Malor are searching for an ancient alien weapon. The twins race to find it first, knowing the power that could save humanity might be equally capable of destroying them.

Ancient beings return to feed on Earth’s cities while a mind-invading parasite spreads through the ruins. Outmatched, Jaden and Malia search for the legendary Founders, hoping a vanished civilization can help them confront an enemy beyond their allies’ strength.

After discovering a forbidden spell he cannot control, Harper receives a secret assignment to find a missing wizard and recover a book of lost magic. The search brings dangers far greater than his professor’s instructions prepared him to face.

A forbidden martial art thought extinct resurfaces in Hawaii under the protection of the Arashi cult. When Samantha investigates and is captured, Yoshida must rescue her and track down the new master before the cult disappears again.

Fifteen years after Nyro vanished, elven troop movements threaten the Five Kingdoms’ fragile peace. Sent with Khaldun to help defend the continent, Mira discovers a wider war unfolding and must confront the increasingly powerful force awakening within her.

War drives Princess Allison and her family into exile as Nyro’s forces threaten Anoria. To protect those she loves, Allison considers forbidden necromancy, risking the same kind of power that once brought devastation to the world.