What is the author's style in Innocent Blood by P.D. James?

The novel is set in England and written by an English author, therefore much of the language in this novel is filled with the unique slang and speech patterns of England. Some of the speech written as dialogue in this novel can be confusing based on the unique grammar patterns of English slang, but it is not difficult for a reader to understand even if that reader might not be familiar with these grammar patterns. The novel also includes some foreign phrases that are not often readily explained in the text, but the comprehension of these phrases is not vital to the overall plot of the novel and therefore do not affect the reader's comprehension of the novel.