Ten deadly sins 4 who is the murderer of the woman?

Female doctor. Ten deadly sins 4 is a horror novel written by the writer Spider. This book is adapted from a real case, and all the place names involved are pseudonyms. In the plot of the novel, the female doctor tells the crime of killing the hosts Xia Jin and Anne. 10 terrorist murders introduced in the novel happened around us, and each one was a mysterious case tightly blocked by the media and kept secret by the government.