They've loved each other through centuries-soldier and sculptor, queen and poet, stranger and savior-only to be torn apart by forces beyond time.

Evelyn Carter, a no-nonsense archivist, stumbles upon a box of mysterious love letters that eerily mirror her own life. When she meets the elusive and hauntingly familiar Gabriel Reyes, the past begins to unravel around her. Together, they uncover a truth deeper than memory: they've lived and died a hundred times... always finding each other, always forgetting.

But this lifetime is different.

This time, they remember.

From the archives of New York to the ruins of Prague, from shattered mirrors to the river beneath time itself, Evelyn and Gabriel must confront the keepers of fate, the Severants-beings who sever soul-bonds to preserve order. To end the cycle of reincarnation, they must risk their final chance at life, love, and the truth.