She wrote about theater for The Oregonian, anchored and reported for New York Public Radio, Bloomberg Radio, New York Times Radio, CNN and Fox News, and she freelanced articles for People, Entertainment Weekly, New York Newsday, American Theatre, and the Seattle Times. Her first book, Ted and Ann: The Mystery of a Missing Child and Her Neighbor Ted Bundy, was independently released in 2011 as a paperback by Dog Ear Publishing and re-released in 2013 as an ebook. In November 2014, "Washington's Most Wanted" featured Morris and her book on KCPQ TV in the Seattle-Tacoma area. In 2012, she wrote the book Bad Apples about teacher sex scandals. Bodies of Evidence, the first in a book series titled Notorious USA, which Morris co-wrote with author Gregg Olsen, was released in September 2013. With the May 2014 release of Morris and Olsen's book If I Can't Have You about the disappearance of Susan Powell, Kirkus Reviews wrote that the authors "convincingly lay out the myriad of circumstantial evidence against Josh." The book broke news with witness accounts that revealed the Powell children might have been molested. Publishers Weekly, in its review, wrote that the authors did "a solid job depicting the heartbreaking case of Susan Powell." A second book in the Notorious USA series, Overkill, written by Morris and Olsen, debuted at number 20 on The New York TimesBest Seller list in e-book nonfiction the week of August 16, 2015. In 2016, Morris and Olsen wrote A Killing in Amish Country, released by St. Martin's Press. The book outlines one of just two reported murders among the Amish in America in more than 250 years. Also, the death of Barbara Weaver marked the third known Amish murder in hundreds of years. The Philadelphia Inquirer in its review wrote that "Olsen and Morris work hard to invest the crime with jump and venality." In 2017, Morris co-authored The Crime Book volume with American crime writers Shanna Hogan, Lee Mellor, Cathy Scott and British author Michael Kerrigan, with a foreword for the U.S. edition by Scott and the U.K. edition by author Peter James. It was released in April 2017 in the U.K. and May 2017 in the U.S. by Dorling Kindersley.
Awards
A Killing in Amish Country was named Suspense Magazine's Best Books of 2016 in the true-crime category. Overkill was a New York Times bestseller in August 2015. Bodies of Evidence debuted the week of September 22, 2013 at number 16 on The New York Times Best Seller list in e-book nonfiction.