Ken Greenhall was an editor of reference books, first on the staff of the Encyclopedia Americana and later for the New Columbia Encyclopedia. He wrote his first novel, Elizabeth (1976), a tale of witchcraft, under his mother's maiden name Jessica Hamilton. Several more novels followed, including Hell Hound (1977), which was published abroad as Baxter and adapted for a critically acclaimed 1989 French film under that title. Greenhall died in 2014.

Grady Hendrix is an award-winning and New York Times best-selling novelist and screenwriter living in New York City. He is the author of Horrorstör, My Best Friend's Exorcism, We Sold Our Souls, The Southern Book Club's Guide to Slaying Vampires, The Final Girl Support Group and How to Sell a Haunted House. Grady also authored the Bram Stoker Award-winning nonfiction book Paperbacks from Hell and These Fists Break Bricks: How Kung Fu Movies Swept America and Changed the World.