Endless Water, Starless Sky by Rosamund Hodge

In the last days of the world, the walls of Viyara are still falling, and the dead are rising faster than ever.

Juliet is trapped—ordered by Lord Ineo of the Mahyanai to sacrifice the remaining members of her family, the Catresou, to stave off the end of the world. Though they’re certain his plan is useless, Juliet and her former friend Runajo must comply with Lord Ineo’s wishes—unless they can discover a different, darker path to protecting Viyara.

Romeo is tortured: finally aware that his true love is alive, he is at once elated and devastated, for his actions led directly to the destruction of her clan. The only way to redemption is to offer his life to the Catresou to protect and support them . . . even if it means dying to do so.

When Romeo’s and Juliet’s paths converge once again, only a journey into Death will offer answers and the key to saving them all—but is it a journey either of them will survive?