How many narrators are in The Plague of Doves?

In The Plague of Doves, the author utilizes multiple narrators, all of whom contribute varying perspectives which ultimately add to the richness of the plot. In the text itself, an omniscient (all-knowing) narrator is employed in the first chapter, and in subsequent chapters, the author uses various first-person narrators. The first narrator in the novel is Evelina Harp; the second is Judge Antone Bazil Coutts; the third is Marn Wolde; and the fourth (and final) narrator is Dr. Cordelia Lochren. 

The technique of using many voices in the novel allows the reader to access multiple truths across space and time, as well as appreciate different points of view while maintaining an objective stance. At times, using multiple narrators can confuse the reader, but in this text it highlights the connections between all of the characters.