"Ruthless Vows," the riveting sequel to "Divine Rivals," immerses readers in a war-torn realm where love and loyalty are put to the ultimate test. Iris Winnow, recovering from the physical and emotional scars of the battlefield, finds herself entrenched in political machinations and a brewing conflict that threatens to dissolve the unprepared city of Oath. Meanwhile, Roman, afflicted by amnesia and serving the very deity he once opposed, teeters on a precipice between allegiance and betrayal as he connects with an enigmatic correspondent through letters. As darkness descends and their fates intertwine, Iris and Roman's decisions will hold the power to sway the war's outcome and their own hearts, promising a story of passion, intrigue, and rebellion.