"Echoes of Betrayal"

After their return from Tír na nÓg, Eithne and her friends are thrust into a world on the brink of disaster. The ancient book, holding the power to imprison Eithne once again, has been stolen, and the powerful immortals who once ruled humans with absolute authority are vanishing without a trace. Determined to uncover the truth, Eithne and her companions journey through portals, facing otherworldly creatures in the Underworld and unravelling deadly secrets. But the clock is ticking, and every step brings them closer to an enemy far more powerful than they could have imagined. Meanwhile, Cailleach, having witnessed Eithne’s imprisonment, is hunted across Roman-held territories, desperate to find allies among the immortals. Betrayal, vengeance, and ancient magic collide in a battle that will determine the fate of all. The gods are retreating, but Eithne refuses to back down. Will she reclaim her destiny, or will chaos finally consume them all?