Ricardo Diseño is the artist behind the Classic Horror Oracle. An Austin, Texas-based illustrator and poster designer, he has done work for the New Yorker, the Criterion Collection, the New York Times, Refinery29, Illustoria, Spoke Art, Chronicle Books, and many others.

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Salk's Disciple is the author of the Ends of Magic series.

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Tina Dirmann is a feature writer, investigative journalist, and nonfiction author. A former senior staff reporter for Us Weekly, she is a regular contributor to the Los Angeles Times, Orange Coast Magazine, and USA Today, as well as several international magazines, including OK! (England) and Grazia (Australia).

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Maria DiRico is the pseudonym for Ellen Byron, author of the award-winning, USA Today bestselling Cajun Country Mysteries. Ellen is a freelance journalist and has been a writer-producer for hit television series like Wings and Just Shoot Me. She lives in Los Angeles with her husband, daughter, and two rescue dogs.

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Michele DiPietro is associate director for graduate programs at the Eberly Center and instructor in the department of statistics at Carnegie Mellon.

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Sylviane A. Diouf is an award-winning historian of the African Diaspora. She is the author of Slavery's Exiles, Servants of Allah, and Dreams of Africa in Alabama. Diouf is a Curator at the Schomburg Center for Research in Black Culture of the New York Public Library.

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E. J. Dionne, Jr., is a bestselling author, a longtime op-ed columnist for the Washington Post, and a professor at Georgetown University. His Why Americans Hate Politics won a Los Angeles Times Book Prize and was a nominee for the National Book Award.

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Danielle Dionne is a professional psychic medium and witch. Danielle is an initiate in the Temple of Witchcraft tradition and serves as Scorpio Deputy Minister for death, dying, and bereavement. She has been teaching psychic mediumship development since 2009 and runs Moth and Moon Studio, a spiritual development center.

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Lisa Dion is the creator of Synergetic Play Therapy and the author of Aggression in Play Therapy. She lives in Louisville, Colorado.

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Ronnie James Dio was the most acclaimed heavy metal singer of his generation, and the only rock star to achieve multi-platinum success in not one, but three bands: Rainbow, Black Sabbath, and Dio. He died in 2010.

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Ted Dintersmith was the executive producer of the acclaimed documentary Most Likely to Succeed and is coauthor, with Tony Wagner, of the book Most Likely to Succeed: Preparing Our Kids for the Innovation Era. When he's not visiting schools, he lives in rural Virginia.

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Matt Dinniman is a writer and artist from Gig Harbor, Washington. He lives with his wife, family, and menagerie of animals.

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