Brian Herbert’s “House Harkonnen” is a fascinating addition to the Prelude to Dune series. It creates a complicated web of personalities and conflicts within the colorful world of Frank Herbert’s Dune novel. Baron Vladimir Harkonnen plots to overthrow the new Emperor and House Atreides while Shaddam ascends the Golden Lion Throne. Important decisions must be made by Leto Atreides, the head of his House, between friendship and duty, safety and destiny.