Horizon Echo. Relic Saga, #4

Ten years after sealing the Time Rift, Horizon Roman thinks Kalecca's future is finally safe-until the jungle goes silent, Seer Sickness returns, and a vision shows her older self handing a forbidden book to the alien who once nearly erased Kalecca from existence. To stop the Rift from opening a second time, Horizon must untangle the knots of her own past, face the legacy of Ravenne, and risk becoming the very anomaly that unravels the timeline she loves.