Formula of Evil

Katy Harmon is an ordinary nine-year-old girl who loves cartoons and children's books, and only her mother Sarah knows that there is bad blood of a cruel murderer running in their veins. This secret Sarah keeps her whole life, hiding from those who seek traces of her biological mother. But when Katy's nanny Anna tragically dies before her eyes, crashing against the rocks, Sarah's old fears come alive. Was it an accident, or is Katy involved in Anna's death? Will they manage to continue hiding from the sensationalist journalists, or is Sarah facing a terrible exposure? And the main question: do people become murderers or are they born that way?