Meg Randallman is just four years old when her six-year-old sister Laura dies and her mother, Norma, kidnaps Meg and her brother, Ray. Meg often wonders how different her personality might have been had she not experienced the brutal shock and grief of Laura's death during her formative years. For seventeen years, Meg is haunted by the guilt and misunderstanding of her sister's death, unable to talk about the tragedy with anyone. In her affluent new home, she buries herself in music and academics and graduates from Stanford with honors. After landing a job in cyber security at "the Lab," she finds friendship and romance. She also finds herself in the crosshairs of corporate espionage when she fills a position formerly held by a woman who was murdered. A novel filled with the elements of murder, romance, mystery, and family conflict, Halfa Moon narrates the story of one young girl's journey from innocence to experience.