Plot synopsis: Tells the story of Cornelia Titko, a brave scientist with remarkable memory, whose childhood was destroyed by the premature death of her parents and older sister. Cornelia's mother, Teresa Titko, was an outstanding nuclear physicist; in the Gierek nuclear program, she played the role of the right hand of its creator, general-professor Grzegorz Giedrowicz. Years later, a mysterious man appears in Cornelia's life, claiming that he was once accused of murdering her sister. The heroine begins a private investigation. Who is the mysterious man and what really connects him with the death of Cornelia's two closest women? What price will she be charged for trespassing into forbidden territories? What role in this history were played by the officers of the PRL counterintelligence - Captain Ewa Wolańska and Second Lieutenant Tadeusz Mróz? Who wanted Poland not to join the small group of countries that counted in the nuclear race?