Blood Brothers

Blood Brothers opens Nora Roberts's Sign of Seven Trilogy with atmospheric dread and genuine pace. Three childhood friends unknowingly unleash a centuries-old demonic curse during a blood-brother ritual, and twenty-one years later they must stop the next cycle before it destroys their Pennsylvania town. Roberts builds real tension between the paranormal horror and the developing romance between Cal and investigative journalist Quinn Black. Readers should go in clear-eyed: this is adult fiction with explicit sexual content, graphic violence, and demonic/occult themes rooted in a Pagan-era ritual. It is not appropriate for children, teens, or faith-sensitive readers. For the adult audience it targets, it's a well-crafted, New York Times bestselling thriller setup with a satisfying series hook.