Books like The Line Between by Tosca Lee

During World War II, a foster girl in Nazi Germany steals books to share with neighbors and a hidden Jewish man, proving literature’s power to nourish the soul amid darkness.

When a commuter train ride turns into a shocking glimpse of another life, Rachel’s curiosity pulls her deep into a murder mystery that challenges her own sense of reality.

Sisters Vianne and Isabelle are pulled into the turmoil of World War II, each forging a path of courage and resistance against the Nazi occupation of France.

Two college friends discover that love can span continents and a decade when they reunite after life‑changing choices thrust them apart.

Journalist Ellie uncovers a 1960 love letter that urges a woman to leave her husband, pulling her into a decades‑old affair while she grapples with her own relationship with a married man.

It is 1974 when Leni Allbright's impulsive father Ernt decides the family is moving to Alaska. But the Alaskan winter is just as unforgiving as Ernt, and life quickly becomes a struggle for survival.

In a future of enforced peace, humanity is secretly dead—until a young man discovers a vial of life‑giving blood and a cryptic message that could resurrect both life and the ancient evils it suppressed.

"I very much need to be dead." These are the chilling last words left by a man who had everything to live for but took his own life. In the void that remains stands his widow, FBI agent Jane Hawk, surrounded by questions destined to go unanswered unless she does what all the grief and fury inside her demand: Find the truth, no matter what. People of talent and accomplishment, people seemingly happy and sound of mind, have recently been committing suicide in surprising numbers. A disturbing pattern is beginning to emerge. Jane is determined to give up everything to find out why. And if that means going rogue and becoming America's Most Wanted, then so be it. Those arrayed against her are legion, and devoted to protecting something profoundly important-or terrifying-enough to exterminate any and all in their way. But Jane is as clever as these enemies are cold-blooded, as relentless as they are ruthless. And she is driven by a righteous rage they can never comprehend. Because it is born of love.

Two authors explore the world where people are actually dead, long ago genetically stripped of true humanity, in a terrifying medieval future where grim pageantry masks death and dark desires drive the story of a world teetering on the brink of annihilation and survival. The final surviving hope for humanity is at risk, and no one knows the path to survival. It is set against the backdrop of forbidden love, betrayal, and the power of a blood-based potion that has given Rom Sebastian a new life, but has also made him the first of a secret faction of Mortals in a world where every single soul is actually dead, long ago genetically stripped of true humanity.