Kaitlyn Katsoupis

Kaitlyn Katsoupis – Editor

Literary Agent offering manuscript critiques, developmental edits, and submission polishing for fiction novels readying for publication


I am a freelance editor and literary agent with seven years of experience in the book publishing industry. With a degree from Emerson College in Writing, Literature, & Publishing, I have extensive knowledge in the tools needed for polishing and readying a fiction novel for either submission to an agent/editor, or for readying it to be released in the self-publishing world.

I offer editorial services that focus on feedback/guidance for full manuscripts as well as getting your first pages and supplemental info sparkling before you send them off to an agent. My focus is to provide a Compliment Sandwich critique technique: highlight your strengths and hooks, but also provide guidance and suggestions for areas that need revision or fine-tuning. Often, my turnaround time for full manuscripts in 2-4 weeks, depending on word count and level of edit needed.


"Kaitlyn is a writer’s dream editor. Whether it’s copyediting or giving developmental notes, she’s sharp, efficient, and extremely concise with her recommendations. As a first time published author, I feel lucky to have Kaitlyn in my corner. She has helped guide, shape, and push my writing to be the best it can be!"

- E.J. Schwartz, author of Before We Were Blue

"Kaitlyn is my greatest asset. Her feedback is thorough, insightful, and always makes me see my work in a new light. The editorial letters I get from Kaitlyn provide a roadmap to a better novel, give a clear path forward, and make me a better writer. She’s kind, intelligent, and professional. I would recommend her without hesitation."

- Jaime Berry, author of Hope Springs and Heart Finds

Contemporary Fiction Epic Fantasy Historical Fiction LGBTQ Fiction Middle Grade Romance Urban Fantasy Young Adult
English (US)

Work experience

Belcastro Literary Agency

Jan, 2020 — Present

I am a literary agent specializing in MG-Adult, mainly in the following genres: Contemporary, Fantasy, Romance, Horror, Paranormal, Historical.

Clients have been published with Big 5 publishers, including Penguin, HarperCollins, and Macmillan.

Accent Press

Apr, 2017 — Sep, 2017 (5 months)

I acted as the editor for multiple works Accent Press acquired during the 2017 season, offering editorial guidance and revisions before the titles moved on to physical publication


May, 2016 — Dec, 2016 (7 months)

I acted as copyeditor to multiple academic textbooks through codeMantra, a subsection of Pearson education. I provided work focusing on college and high school textbooks, primarily in science, history, and humanities.


Apr, 2016 — Jan, 2020 (almost 4 years)

I began as an intern at CLA and was promoted to Apprentice, and then Agent. I focused mainly on MG and YA here, selling multiple titles before moving to my current agency, Belcastro.

Kaitlyn has 17 reviews





Melissa M.

Melissa M.

Feb, 2024

Kaitlyn was a pleasure to work with! I found her feedback very valuable. I am excited to implement her suggestions to elevate my materials.
Shakira S.

Shakira S.

Feb, 2024

Excellent job reworking my query letter. It reads a lot crisper and makes the book sound really cool. Would hire again!
Angelina H.

Angelina H.

Dec, 2023

Kaitlyn game me some valuable advice that prompted a rewrite to my story that made it even better and totally change the way I look at my query letter. I would work with her again.
Liam L.

Liam L.

Dec, 2023

Kaitlyn was very clear and offered solid advice throughout our interaction.
Catherine C.

Catherine C.

Nov, 2023

Kaitlyn was professional, had a quick turn-around, and had some fantastic insights about my work. I would definitely recommend her!

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