Psychological Thriller is a sub-division of the Thrillers and Suspense genre which also includes the following literary categories:
Crime Domestic Financial Historical Legal Medical Military Psychological Thrillers Spies & Politics Supernatural Suspense Technothrillers
Each has a separate section on amazon.com for simple classification and effective marketing. However, not every book labelled as psychological fiction fully satisfies the requirements of the genre. A Million for Eleanor by Danil Rudoy is a good example. Even though the novella is subtitled as A Dialogue-Driven Psychological Thriller Book, the author’s approach to building suspense is rather unconventional. The interested readers can buy the book on amazon.com, while members of Kindle Unlimited can read the text for free.