I specialize in copyediting and proofreading fiction for readers of all ages.

In the past nine years I have been hired as the copyeditor, proofreader, or production editor on more than 600 books for clients that include Penguin Random House, Simon & Schuster, Macmillan, and HarperCollins Publishers. Before that I was an in-house copyeditor at Random House Children’s Books and an in-house production editor at Penguin.

Among the books I’ve worked on are a National Book Award finalist, a Hugo Award winner, three Top 10 Books of the Year selections, and several instant #1 New York Times bestsellers.

Say hello and tell me about your project.


Spelling, punctuation, grammar, timeline, character traits, and scene blocking. Nothing goes unchecked.


Ensuring your book pages are perfectly typeset and error-free.

Production Editor

I’ll find your copyeditor and proofreader, set deadlines, and oversee edits from manuscript to final pages.


Alt text copywriting, text Americanization, cover copy edits, e-book quality control, and more. See the Services page for details or contact me with any editorial-related needs you don’t see here.


Tricia Callahan did a flawless and extremely professional job copyediting an 80K word manuscript for me. She created a beautiful style sheet and in our work process was flexible, punctual and kind—a total pleasure to work with! I cannot recommend her highly enough and very much look forward to working with her again.

Elizabeth Doyle Carey

I screened editors for a book manuscript, selected Tricia, and was thrilled with the results. She easily earned five stars across the board. In fact, Tricia went the extra mile, far exceeding what was expected in terms of quantity and quality of edits. As an indie author on a tight budget, I was concerned about cost. She proved to be worth every penny (and then some). Highly recommend her.

Jeff Langholz