Agatha Christie was a famous mystery novelist. Her novels were highly readable and interesting. Here are a few must-see Agatha Christie books I recommend: The Roger Mystery (The Roger Mystery is one of Agatha Christie's most famous novels. It tells the story of a rich man being murdered and the police discovering many surprising clues and mysteries during the investigation) 2. The Murder on the Oriental Express (This novel is one of Agatha Christie's masterpieces. It tells the story of a passenger who was murdered on the Oriental Express. The police found many surprising clues and mysteries during the investigation.) 3. The Massacre on the Nile River (This novel tells the story of a wealthy merchant who was murdered on a boat on the Nile River. The police found many surprising clues and mysteries during the investigation) 4. Sin Under the Sun (This novel tells the story of a lawyer who was murdered under the sun in Los Angeles. The police found many surprising clues and mysteries during the investigation) 5. Murder cases (Agatha Christie's novels usually contain multiple murder cases, which are closely related to each other. The reader can read these novels to understand the plot and clues of the whole story) I hope these recommendations can satisfy your reading needs. I wish you a happy reading!