"The Fear Index" (Ukrainian: "Index of fear") is an exciting thriller from the famous writer Robert Harris, the author of such audio reports as "Silence of the Lambs" and "Adrenaline". The book tells the story of Julian Lawrence, a brilliant financial analyst who developed a unique system for predicting stock market behavior using artificial intelligence. However, when his mysterious algorithm begins to reveal unexpected changes and strange events, Lawrence realizes that his invention may have dangerous consequences. The book "Index of Fear" is an exciting intellectual journey, where the author successfully combined technology, the financial world and a psychological thriller, leaving the reader in tense anticipation of the development of events until the last page.