Jenna Glatzer is the author or ghostwriter of more than 30 books, including Celine Dion's authorized biography ("Celine Dion: For Keeps") and a Marilyn Monroe biography authorized by her estate ("The Marilyn Monroe Treasures"). She ghostwrites all kinds of stuff, but focuses on memoir and health. She's also a writing instructor who teaches a course on how to sell a nonfiction book to a major publisher. Jenna writes for The Washington Post, Parents, Writer's Digest, Popular Science, and many others. She's a single mom who lives in New York with a wildly cool teenage daughter and a kind of obnoxious leopard gecko. (He bites.)