Since we don't know much about the 'harris book story', it's likely that Harris is the main character as the title mentions 'harris book story'.
I'm not sure specifically what the 'harris book story' is about as there could be many stories related to a 'Harris' in a book. It might be about a character named Harris, his adventures, relationships, or some important events in his life that are detailed in the book.
Clarice Starling is an important character too. She is an FBI agent. In 'The Silence of the Lambs', she has to deal with Lecter to catch another serial killer, and her character shows determination and intelligence in the face of great danger.
Well, Harris' book story could be about how she overcame challenges in her career. Her book might talk about her early days in law, her prosecutorial work, and how all those experiences shaped her political ideology. For example, her work on issues like criminal justice reform might be a central theme in the book, showing her evolution in thinking and her commitment to making a positive change in the system.
Based on just the title, Mr Harris is clearly a main character. There may be other characters like fellow passengers. Maybe there's an old lady who shares her life stories with Mr Harris during the night train journey. Or there could be a young adventurer who is also on the train and they both get into some sort of adventure together. It's also possible that the train driver has some part to play in the story, even if it's just in the background creating the atmosphere of the moving train.
In the 'Book of Thoth' story, Thoth is the main character. He was a very important god in the Egyptian pantheon. He was known for his intelligence and his role in recording the deeds of the gods and mortals. Since the book was his creation, he was often depicted as the one who held the knowledge within it and could either share or withhold it as he saw fit.
In the 'Book of Thoth' story, the main character is Thoth. Thoth was a very important god in the Egyptian pantheon. He was often depicted as an ibis - headed man. He was the one who was believed to have written the book, which was filled with all kinds of knowledge, from magic to the secrets of the universe. So, he is the central figure in the story related to this book.
The main character in the 'hachiko book story' is Hachiko, the loyal Akita dog.
The main character in 'God Story Book' is not fixed. It might be a mythical deity with extraordinary powers or a person who has a profound connection with the divine and undergoes significant transformation.
Sookie Stackhouse is a major character. She is a telepathic waitress who gets involved with the vampire world. Her ability to read minds makes her both an interesting and sometimes endangered figure in the vampire - human interactions. Bill Compton is another important character. He is a vampire who has a relationship with Sookie.
There are many different main characters across the stories. In some, it might be a curious child exploring a strange place. For example, in 'The Secret Garden' - like story in it, the child character is the one who discovers the hidden beauty and secrets.