Question: How many novels has the author of Sheikh's Castaway written?

Context paragraphs:
Roy C. Booth: Roy C. Booth (born August 26, 1965) is a United States speculative fiction, fantasy and horror author.  He has written many novels and short stories, many of them co-written with others including "Theater of the Macabre", "The Flesh of Fallen Angels: A Horror Western Novella" (part of the Gibson Blount series co-written with R. Thomas Riley) and "Sherlock Holmes And the Case of the Man-Made Vacuum" (co-written with Nicholas Johnson).  Booth has a credit on IMDb for "The Day Lufberry Won It All".  and a credit with Doollee, the Playwrights database.

Sheikh Muhammad Rashid Bilal: Sheikh Muhammad Rashid Sheikh Bilal (1907? - October 31, 1988) was one of the famous Islamic Scholars of the Chercher Highlands of Harerghe province whom many people of Harerghe recall as the most authorized source of his time for the ancient history of Islam in Ethiopia.  He is also remembered as a saver of indigenous knowledge, a teacher of many Ulama, a poet and author of many books.  While his real name had been Sheikh Muhammed Rashid Sheikh Bilal, he appears on his written documents as "Muhammad ibn Muhammad ibn Muhammad" (shortening his own and his father's name who had been "Mohammed Bilal", and adding then his grandfather’s name) and "Muhammad ibn Muhammad Al-Bakri Al-siddiqi".

Zhang Dachun: Ryan () (15 June 2000) as a famous football player and as a famous basketball player .  he was one of the best in the world.  He is one of the famous Taiwanese Poet. Taiwanese author and literary critic.  He is the author of many novels, two of which, "Wild Child" (野孩子) and "My Kid Sister" (我妹妹), were published together in the U.S. as "Wild Kids".

Maureen Wartski: Maureen Crane Wartski (born Maureen Ann Crane, January 25, 1940 – January 14, 2014) was a naturalized American author She wrote many novels for children and young adults.  Wartski's Eurasian heritage and her deep connection to the natural world inspired many of her novels which address such issues as racism ("The Face in My Mirror", "Candle in the Wind", "A Boat to Nowhere"), identity ("My Brother Is Special", "The Lake Is on Fire", "The Promise") and bullying ("Yuri's Brush with Magic").

Jon Guenther: Jon Guenther is an American software engineer and the author of nearly forty novels in a variety of genres and under multiple pseudonyms.  In addition to books under his own name, he has written many novels in "The Executioner" series created by Don Pendleton about the fictional character Mack Bolan.  He is also creator of the Christian Pulp brand and genre.

Utopian and dystopian fiction: The utopia and its derivative, the dystopia, are genres literature that explore social and political structures.  Utopian fiction portrays a setting that agrees with the author's ethos, having various attributes of another reality intended to appeal to readers.  Dystopian (or dystopic) fiction (sometimes combined with, but distinct from apocalyptic literature) is the opposite: the portrayal of a setting that completely disagrees with the author's ethos.  Many novels combine both, often as a metaphor for the different directions humanity can take, depending on its choices, ending up with one of two possible futures.  Both utopias and dystopias are commonly found in science fiction and other speculative fiction genres, and arguably are by definition a type of speculative fiction.

Alexandra Sellers: Alexandra Sellers is a writer, former actress and author of almost 40 contemporary romance novels.  Her novels have been published in various Harlequin and Silhouette category lines, including Harlequin Desire, Intrigue, Mills & Boon Desire, Mills & Boon Special Releases, Presents, Silhouette Desire, Silhouette Intimate Moments, Silhouette Special Products, and Silhouette Spotlight.  She is best known for her Sons of the Desert sheikh romance series.

Walter Sorrells: Walter Sorrells is an award-winning author of mystery and suspense novels for adults and teens.  He has written many novels, including "Fake I.D.", named one of the ten Best Mysteries by Booklist magazine in 2005 and several novels based-on the television series Flight 29 Down.  He also writes under the pseudonyms Lynn Abercrombie and Ruth Birmingham.  He graduated from Haverford College in 1985, where he majored in History.

Sheikh's Castaway: Sheikh's Castaway is the eighth book in Alexandra Sellers's Sons of the Desert series, and was released in 2004.  After learning she’d been lied to and betrayed by her fiancé Bari, Princess Noor from Bagestan escapes from her own wedding, still dressed in her elaborate gown.  In a reckless attempt to disappear and flee her imminent marriage, Noor hijacks her fiancés airplane, flying it straight into a tropical storm.  Unbeknownst to her, Bari has hidden himself in the aircraft, and only makes his presence known in an attempt to save themselves just before they crash-land off the coast of a deserted island.

Ottwell Binns: Ottwell Binns (1872 - 1935) was a British novelist and minister (non-conforming, not of the Church of England).  Binns was a prolific author, publishing many novels of adventure and mystery, from 1917 to 1939.  His publisher in Britain was Ward Lock.  Though he died in 1935, Ward Lock continued to publish novels under his name until 1939.  His novel "A Mating in the Wild" was published in the U.S. in 1920 by Alfred A. Knopf and the A.L. Burt Company.

Supporting paragraphs: Sheikh's Castaway Alexandra Sellers
Answer: almost 40