The book "Twenty-three and a half hours of vacation" by the famous American writer Mary Roberts Rinehart is an exciting detective story that unfolds in the era of the First World War. In this exciting novel, the author successfully combines tension, romance and intrigue. The main character, a young lieutenant, gets only twenty-three and a half hours of leave to unravel a complex paradox: in the conditions of war, he needs to identify a criminal who threatens his life and that of his loved ones. The author skillfully weaves intrigues, saturating the plot with unexpected turns that keep the reader in suspense until the last page. "Twenty-three and a half hours of vacation" is an exciting novel that combines elements of detective, romance and historical tension. This book will keep you enthralled from start to finish, thanks to the vivid images of the characters and the intricate scenarios of the action.