What Lurks Between the Fates by Harper L. Woods

Here is a summary with spoilers of What Lurks Between the Fates

The third book in the series plunges Estrella and Caelum into the clutches of Mab, Queen of Winter, where they are held captive with seemingly no chance of escape. Mab’s cruelty knows no bounds as she tortures them relentlessly, her ultimate goal being to unlock the mysteries of Estrella’s growing powers. Estrella endures her torment, but the pain is magnified as Mab uses Caelum to manipulate her, making their imprisonment even more harrowing.

Mab’s keen awareness of the mate bond between Estrella and Caelum is a critical factor in her control. She ensures they are never truly alone, preventing them from completing the bond, knowing that doing so would make them powerful enough to overthrow her. Their love and connection remain strong, but the inability to solidify their bond becomes a source of anguish for both.

Despite the odds, Estrella refuses to be passive. She takes vengeance into her own hands, targeting those who have abused and defiled Caelum, a testament to her fierce loyalty and growing resolve. Meanwhile, Caelum desperately seeks a way to convince his mother to relinquish her throne, hoping to place it in the hands of himself and Estrella. Their shared determination drives them forward, even as Mab’s hold tightens.

In a pivotal moment, Mab’s cruelty peaks when she kills her own brother, the Summer King, in her ruthless pursuit of power. She then turns her blade on Caelum, unaware that his blood bond with Estrella ensures their fates are intertwined. As Caelum’s life hangs in the balance, Estrella makes a heart-wrenching decision: she offers herself in eternal servitude to Mab in exchange for Caelum’s survival.

Mab accepts the deal but immediately tests Estrella’s loyalty. Her first task is to retrieve a mythical snake from Medusa, a perilous mission she must face alone. Estrella has only 13 days to complete the task, or the deal will fail, and Caelum will perish. With Caelum left behind, Estrella sets out on her journey, her love for him and her indomitable will driving her forward despite the daunting challenges ahead.