"All We Lost Was Everything" is a dark romantic thriller that delves into the life of River Santos, an eighteen-year-old whose world is shattered after her house burns down, taking with it her belongings and her father. Suddenly thrust into a new reality, River receives an anonymous donation of two million dollars, turning her life upside down and raising questions about the donor's true intentions. Working at a diner, she grapples with suspicion toward those around her, especially her enigmatic coworker Logan Evans, whose cold demeanor masks deeper secrets. As River uncovers long-hidden family mysteries and confronts painful truths about her past, the story weaves themes of love, betrayal, and resilience. Sloan Harlow crafts a suspenseful narrative filled with emotional complexity and unexpected twists that keep readers engaged until the final page. This novel is ideal for fans of intense romantic thrillers seeking a compelling blend of passion and mystery.