Grace Sachs is a fictional character from the novel "The Last Thing He Told Me" by Laura Dave. She is portrayed as a devoted wife and mother who finds herself in a complex situation when her husband mysteriously disappears. Throughout the story, Grace navigates her emotions and the challenges of uncovering the truth about her husband's past. As the plot unfolds, Grace's character evolves, showcasing her resilience and determination. She becomes a central figure in unraveling the mystery surrounding her husband's disappearance, leading her to confront secrets that impact her family and their future.