None Survived was a mystery novel by Christie from England, and it was regarded as one of Christie's representative works. The story takes place in the late 19th century in England. It tells the bizarre story of murder, fraud, and murder between a detective director and a banker. The protagonist of the story is Detective Arthur Conan Doyle, who has been assigned to investigate a seemingly ordinary murder case. In his investigation, he found that there was a huge conspiracy behind the case, involving British politics, society, wealth and many other fields. As the investigation went deeper, Robison discovered a series of shocking truths, including a banker who planned a murder in order to obtain a huge inheritance, a politician who was accused of murdering his lover, a policeman who was accused of murdering his boss, and so on. In the course of his investigation, Robison encountered many difficulties and challenges, including contact with mysterious people, the pain of losing friends and relatives, and the traps of politics and conspiracies. In the end, he uncovered the truth of the entire murder case and brought the murderer to justice. None Survived is a novel with a complicated plot, full of suspense and reasoning elements. The readers can experience the thrill of solving the mystery in it. It was also widely praised and recommended as one of Christie's masterpieces.