Mariah Nichols An agent with D4EO Literary Agency (see other agents at this agency). About Mariah is a freelance editor at D4EO Literary Agency assisting on editorial projects in a wide variety of genres.Since 2019, Mariah has worked alongside Founder and Principal Literary Agent, Bob Diforio, in all aspects of the business including holding the role as literary agent, where she helped authors launch their publishing careers in both fiction and nonfiction gaining USA Today bestselling status. With her love of partnering with authors on each of their projects and being hands-on, Mariah soon transitioned her role from literary agent to a freelance editor for the agency showcasing a keen eye to detail and a dedication to enhance manuscripts without taking away the author’s voice. With her business background and true passion for publishing, Mariah’s talent shines in supporting authors. Country United States AI Policy Unknown AI policy Collapse section Fiction Temp Closed Mariah is interested in upmarket and commercial adult fiction focusing on women's fiction, psychological thrillers, and contemporary romance/rom-coms, along with representing young adult fiction with genres including science fiction, paranormal romance, thrillers, and contemporary romance.Audience:Open to a broad Audience, including: Adults, Young adults.Genres: General Subgenre: Women's Fiction Horror Subgenre: Paranormal Romance Open to all/most Subgenres, including: Romantic Comedy Science Fiction Open to all/most Subgenres Suspense/Thriller Open to all/most SubgenresLengths: NovelStyles:Open to all/most Styles, including: Literary, Mainstream.Topics: Open to all/most Topics.Submissions:Method: QueryTracker. Simultaneous submissions: Simultaneous submissions are allowed. Collapse section Nonfiction Temp Closed She is also wanting to represent nonfiction in categories such as cookbooks, memoirs, self-help, lifestyle, and how-to. Stories that showcase diversity and highlight mental health or special needs is something that she would especially like to see.Audience:Open to a broad Audience, including: Adults.Lengths: BookStyles:Open to all/most Styles, including: Literary, Mainstream, Personal.Topics: Open to all/most Topics including... Health/Medicine: General, Mental health, See guidelines. Lifestyle: Cooking, Food and Drink, Self-help. Memoir.Submissions:Method: QueryTracker. Simultaneous submissions: Simultaneous submissions are allowed. Always check guidelines for details and restrictions. If you aren't familiar with these terms, see our glossary. Go to agent's webpage Report: Submission/Query Correction/Update New Cover ArtSocial:X (Twitter) @litagentmariahLinkedIn LinkedIn For the Agent: Request Interview Duosuma Submission Manager Link to Duotrope Agent Impersonation Scams are becoming commonplace.A legitimate agent will not contact you and request money to represent you. Never pay an agent an up-front fee. That is not how literary agent representation works. Agents earn a commission only after they've landed a publishing deal for you. Also, agents scarcely ever contact writers. If an agent that you haven't queried contacts you about representation, be suspicious. Look up the agent and check if the email address is correct for that agent/agency. Mariah Nichols Submission Statistics The statistics in this section are compiled from submission reports sent to us through our submission tracker. They are not provided by the agency or by Duotrope's admins. Information in this section is updated a few times per day. Learn more about the statistics. We have not received any submission reports for this listing in the past 12 months. Your Submissions This section is available to subscribers only. Join today! Other Agents at this AgencyRachel Lynn Ament OPTED OUTRitu AnandVanessa Campos DNQRobert (Bob) G. DiforioJulie Dinneen CLOSEDRachel EstepJess GilbertJana Hanson CLOSEDJoyce Holland CLOSEDTara KimberlyErica Martin DNQV. RuizKatelyn Uplinger CLOSEDKerstin Wolf CLOSED Before SubmittingWe cannot guarantee that the information on this page is correct. We do our best to keep up, but it isn't always possible. Duotrope listings do not imply endorsement or recommendation of the agent or agency being listed. Before submitting, you should use your own judgment to determine whether the agent/agency meets your standards.Always read the full guidelines provided by the agency/agent.Unless the agency's guidelines state otherwise, always use industry standard manuscript formatting.For agency submissions, it is standard to submit a query letter and sample instead of the full manuscript. Do this unless otherwise instructed.Be professional, patient, and persistent. DatesLast Updated: 02 Sep 2026We check their guidelines for changes every four weeks, and we audit the listing twice a year. Cookie Consent: This site uses secure first-party cookies for essential, preference-setting, and statistical purposes. We do not use any marketing, advertising, or third-party cookies. Read our full cookie policy. Accept All Cookies Allow Essential Cookies Only