Lord Martin Nanter, a hereditary peer and member of the House of Lords, is engaged not only in lawmaking and political activities, but is also known as a brilliant biographer. One day he decided to write a biography of his great-great-grandfather, a doctor - a specialist in the field of blood diseases, who was the life physician of Queen Victoria herself. But, while understanding the circumstances of the life of the famous ancestor, Martin came across strange events associated with the tragedies of people close to him. And so, step by step, Nanterre Jr. got to the terrible secret that his great-great-grandfather, it would seem, took with him to the grave. The secrets of an extremely strange - and terrible - crime...