Mary Otto is grieving the death of her husband, Geoff, in a tragic car accident. When his death has suddenly been ruled a homicide, she seeks out justice with the help of her closest friend. Together the two women hunt a killer by piecing together the secrets and lies that all point to the enigmatic Verity Georgeson, whose past includes the death of her husband from arsenic poisoning. But a tapestry of dangerous characters surrounds them at every step. Will they find Geoff's killer before they become the next victims?