Reeling from the Fourth Elken War, Katja throws herself into a grueling medical apprenticeship. Her fragile peace shatters when a rift tears open the world. In stumbles another version of herself: K, bloody and bruised, hunting the rogue wind spirit Suriel to reclaim her soul. Their plans go awry when they realize the rift is killing their worlds. Wildfires and drought devastate the coastal rainforest. Sky-rivers and rusty creeks defy logic. The girls' only hope of saving their homeland is waking ancient, powerful nature spirits - the exact thing Katja fought a war to prevent. The Kateikos forge a grudging alliance, but after nine years of their worlds diverging, they're each other's worst enemy. K is everything Katja's scared to be - cold, callous, and conniving. Katja has everything K lost - a home, family, and the affection of Tiernan, the fire mage they both loved. Friends take sides. Enemies take notice. Danger creeps closer - people Katja thought she escaped, people K killed in her world, people with grudges old and new. The Kateikos must find a way to calm the storm, because if their friction lights a fuse, nothing will survive the apocalypse.

Fire, smoke, and ash consume the continent in the darkest chapter yet in The Call of the Rift series The Battle of Tjarnnaast left its mark: Katja is adrift, haunted by her memories of the battle and dark visions of a desolate wasteland. Her only guidance is her parents' cryptic messages from the spirit world. On their instructions, Katja goes south to track down her mercenary friend Tiernan. Maybe together, they can find the Rúonbattai's elusive cleric leader, defeat their ranks forever, and end the war. Then Katja could finally go home - if she can decide where home is. Yet Tiernan is missing, and Katja's best hope of rescuing him is by striking unlikely alliances - with untrustworthy acquaintances and new allies hiding dangerous secrets. Druids whisper of dry winters and warming oceans and the war-torn nation is a tinderbox ready to ignite. Katja must use everything in her power, from her water magic to her hand in marriage, to battle the growing flames. If they erupt into a wildfire, everyone and everything she loves will burn with them. About the Series Set in two parallel worlds, this series follows Kateiko Rin, a headstrong teenage girl with the power to shapeshift and control water, as she grows up in the war-torn coastal rainforest. As the worlds diverge, so do the versions of herself. Orphaned Kako takes up arms to protect her people, while refugee Katja finds purpose as a healer. Each girl's fiction is the other's truth - in love, war, and everything in between. The prospect of a rift opening between worlds poses a question to characters and readers: if you could cross into another version of your life, would you? The Call of the Rift series has been praised for its intricate plotting, meticulous worldbuilding, and expert writing, from author Jae Waller, a talented newcomer to YA fantasy fiction. The series appeals to the mature reader of YA fantasy looking for romantic content, women-led fiction, LGBTQ+ and BIPOC representation, and complex worlds and characters. It began in 2018 with The Call of the Rift: Flight and will conclude with the fifth book in the series, The Call of the Rift: Fuse, in 2025.

Step through the portal into a world ravaged by chaotic spirits and corrupted magic in the third book of The Call of the Rift high fantasy series. Kateiko Rin lives a quiet life with her parents and her people in the coastal rainforest. Everything changes when her estranged uncle washes up on their shores, harried and half-dead, trailed by two blue-eyed children no one knew existed. To protect her family, Kateiko secrets away her young cousins. Caring for them includes hiding their ties to the Rúonbattai, a warlike cult trying to claim the land for themselves along with as many lives as they can. With the immigrant mage Tiernan and his companions Jorumgard and Nerio, Kateiko enters into the fray, facing strange, dangerous magic that unwinds the fabric of time. She must end the war before it tears the land, and her family, apart. In the third book in The Call of the Rift series, Jae Waller invites us into another dimension and introduces an alternate version of her captivating heroine in a world full of familiar and unknown faces, including many we thought long dead.