The pulse-pounding third novel in the #1 New York Times bestselling series,The Lightlark Sagaby acclaimed author and #BookTok sensation Alex Aster Love kills kingdoms… Back in Grim’s castle on NightshadeIsla is reeling in the wake of a brutal battle and the devastating truths it exposed. Her future–and the fate of the world–now hinge on a heart split in two. Past Islawho fell in love with the ruler of Nightshadefights to resist feelings she considers treasonous. The Isla of the presentwho has seen the ruin her powers can causewill do anything to save Lightlark and its king. As the line between enemy and friend is testedIsla is more desperate than ever to understand the oracle’s final prophecy and change her heartrending fate. But a storm is coming. And with ita long-buried evil greater than anything the realms have faced before. With the clock ticking on her destiny and the survival of two warring kingdoms hinging on her own shattered heartIsla Crown will either save the world–or destroy it.