Sandra Herner

Sandra Herner – Editor

Developmental Editor assisting active/retired professionals write award-winning, best selling mysteries, military SF and medical thrillers.

Overview

I provide Developmental Editing for professionals (in medical, military, and high tech fields) around the world as they turn their expertise and experiences into reader-attracting books. I assist both commercially published and self-published authors craft fan-satisfying series that win awards.

I believe in the human touch of editor-to-writer and writer-to-reader. AI has its place, but the heart of a story flows from the fingers of an author and springs from their unique and all-too-human experience and imagination. I use and endorse using AI for research and organizational functions, but all creative writing needs to remain human-crafted.

Commercial Success:

My writers have been successful in commercial publishing, by contracting with agents and being published by Simon and Schuster, Seventh Street Books, Kensington, and Martin Sisters Publishing. Client Susan Furlong was included in the New York Times list of "The 10 Best Crime Novels of the Year.”

Self-Publishing Success:

On the self-publishing front, PJ Peterson, retired Internal Medicine physician, and I began collaborating when she started her Julia Child mystery series (about a retired doctor solving crimes). After a successful run of seven, she started an equally successful new series, Christie's Flower Shoppe Mysteries. She has been noted as a top-selling author on Amazon with hundreds of stellar reviews.

Award Winners:

Client Jim Hancock’s first book in his military thriller series was awarded a silver medal from the Military Writers Society of America; was a winner of Books Shelf 2023 Writing Awards; and achieved the Literary Titan Silver Book Award in 2024. He then became a finalist in the Adventure Writer's Competition, hosted by Dirk Cussler, son of Clive Cussler.

Another client, Jennifer Sadera, won a Gold Medal in the IPPY Awards (Independent Publishing Book Awards) for her suspense "I Know She Was There."

Specialties:

Helping writers create a successful series is my greatest joy. I assist with continuity, tone, characterization, setting, plot, structure, pacing, and marketability. My specialties are:

* Mystery (from Cozy to Psychological Suspense)

* Science fiction (from soft science fiction to Military SF)

* Fantasy (from Urban to Epic fantasy)

* Adventures/Thriller (from Western to International Intrigue)

* Mash-ups to Experimental Fiction (Steampunk to, well, you name it!)

I help your story shine with your unique voice and vision.

Helping writers create a successful series is my greatest joy. My specialty is mystery, science fiction, fantasy, and adventures. I assist with continuity, tone, characterization, setting, plot, structure, pacing, marketability, etc.

I can help your story come to life so that your unique voice can shine. I'm here to help you, too!

Services
Fiction
Cozy Mysteries Dystopian Espionage Historical Mysteries Medical Thriller Military Science Fiction Romantic Suspense
Languages
English (US)
Awards
  • Writer's Digest's Top 50 Fiction Markets

Work experience

Crooked Lane Books

Nov, 2017 — Dec, 2018 (about 1 year)
Crooked Lane Books publishes the highest quality crime fiction titles in both print and electronic editions and are distributed to the trade through Penguin Random House Publisher Services. As an on-call developmental editor, I was available for quick turn-around projects providing one round of edits along with an editorial letter as needed.

Self-employed

Jun, 1992 — Present
Coach and editor for fiction writers. I provide advice when we start a writing project together; coaching throughout the creative process; and detailed analysis and editing. We work together to create a strong and reader-attracting book and a fan-satisfying series.

Writers' International Forum

Jun, 1990 — Jun, 1999 (about 9 years)
Edited an in-print magazine for an international base of fiction writers, writing many of the related informational articles. Provided critiques for submitted manuscripts. Writers' International Forum was instrumental in helping authors to become more successful in their writing endeavors. It received recognition for the efforts of all of our staff when it placed in Writer's Digest's Top 50 Fiction Markets for three consecutive years.

Manufactured Homes Magazine

Jun, 1985 — May, 1989 (almost 4 years)
Edited special interest magazine for the manufactured homes industry. Contracted with writers in various fields; provided comprehensive editing and copy editing; and assisted in magazine layout and promotional materials.

BAE Information Systems Technology

Jun, 1981 — Jan, 1998 (over 16 years)
Writer and editor for technical procedures manuals for multi-million dollar U.S. government contracts. Wrote over 250 resumes tailored to government contracts for logistical group. Provided critiques and editing for oral presentations to win government contracts.

Portfolio

Made with Reedsy
The Magdalene Chronicles Collection

McAvoy, Gary

Literati Editions

Developmental Editing
Lethal Wilderness Trap (Love Inspired Suspense)

Furlong, Susan

Love Inspired Suspense

Developmental Editing
The Killer's Wife

Furlong, Susan

Seventh Street Books

Developmental Editing
Made with Reedsy
The Hawk Enigma

J.L. Hancock

Every night, Voodoo’s nightmares force him to relive the past until suddenly they start to predict the future. At the same time, across the ocean in Japan, two world-renowned scientists go mis... read more
Developmental Editing
Made with Reedsy
Rapture of the Deep

Dainton, Christopher

Independently published

Developmental Editing
Made with Reedsy
I Know She Was There

Sadera, Jennifer

CamCat Books

Developmental Editing
Made with Reedsy
Last Known Location (Cedar Lake Series)

Mackenzie, Eva

Craven Ink Press

Developmental Editing
Made with Reedsy
The Sky's Edge

McGrory, Clare A

Dr Clare Anne McGrory Publishing

Developmental Editing
Made with Reedsy
Killer Anniversary

PJ Peterson

Christie O'Mara watched as the artist added the last flourish to her store's name on the front window. This was her way of celebrating the first anniversary of her business, Christie's Flower ... read more
Developmental Editing
Made with Reedsy
Savage Remorse: A Chase Harper Thriller

Grey, Macklin

Developmental Editing
Developmental Editing
Developmental Editing
Made with Reedsy
MASK MORTEM

Arun Rajagopal

A young woman is murdered in her car. Weeks later, homeless men are murdered for their kidneys. The murders seem to be unconnected. "Jick" Arnsson is a successful physician, nearing retirement... read more
Developmental Editing
Developmental Editing
Made with Reedsy
The Galileo Gambit

Gary McAvoy

Father Michael Dominic, prefect of the Vatican Secret Archives, is entrusted with transporting the original 17th-century trial documents of Galileo to Loyola Law School in Chicago for a modern... read more
Developmental Editing
The Lass: A Fearless Girl’s Tale Set in the Scottish Highlands

Povondra, Shirley Ann

Independently published

Developmental Editing
Made with Reedsy
The Magdalene Reliquary

Gary McAvoy

During his routine work in the Vatican Secret Archives, Father Michael Dominic discovers a mystifying 13th-century puzzle constructed for the legendary Cathars by famed Italian cartographer Pi... read more
Developmental Editing
Made with Reedsy
The Magdalene Deception

Gary McAvoy

For two thousand years, believers have relied on Christ’s Resurrection as the bedrock of Christian faith. But what if the Vatican had been blackmailed into suppressing a first-century manuscri... read more
Developmental Editing
Made with Reedsy
The Avignon Affair

Gary McAvoy

A corpse cloaked in secrets rests in an ancient tomb deep beneath Notre-Dame Cathedral, but its identity remains elusive. One priest is determined to find out who the dead man is and what he’s... read more
Developmental Editing
Made with Reedsy
Memoirs of a Black Sheep: Book 1

Hairston, Jamie

Developmental Editing Book Coaching
Developmental Editing Book Coaching
Developmental Editing Book Coaching
Developmental Editing
New York Times bestselling author Lucy Arlington's Novel Idea Mysteries return with Lila Wilkins, who has just been promoted to full-time literary agent. But great new writers aren’t the only ... read more
Developmental Editing
The New York Times bestselling Novel Idea Mysteries make their return with Lila Wilkins, literary agent and “murder magnet,” planning a book signing garden party. But things aren’t coming up r... read more
Developmental Editing
Literary agent and amateur sleuth Lila Wilkins is back to seal the deal in the New York Times bestselling Novel Idea Mystery series. Lila is showcasing some of her biggest authors at a bridal ... read more
Developmental Editing
Edward J. Blakely has been called upon to help rebuild after some of the worst disasters in recent American history, from the San Francisco Bay Area's 1989 Loma Prieta earthquake to the Septem... read more
Editorial Assessment
The author of Rest in Peach serves up another bite of Southern charm in the latest Georgia Peach mystery. Nola Mae Harper is too busy restocking the jars of preserves and chutney flying off th... read more
Developmental Editing
In the refreshing new Georgia Peach Mystery from the author of Peaches and Scream, an upcoming debutante ball turns into the pits when a juicy murder scandalizes a small town.The annual Peach ... read more
Developmental Editing
In the first Georgia Peach Mystery, when murder threatens her family’s orchard, Nola Harper is ready to pick out the killer and preserve the farm’s reputation…To help run the family peach farm... read more
Developmental Editing
Resistance

Daniel Kalla

No treatment. No cure. No hopeOnce it seemed as though penicillin and other antibiotics had won humanity a lasting victory over harmful bacteria. But now hardier bugs, resistant to most common... read more
Proofreading
Pandemic: A Novel

Daniel Kalla

Genesis of a PlagueRight now, in a remote corner of rural China, a farmer and his family are sharing their water supply with their livestock: chickens, ducks, pigs, sheep. They share the same ... read more
Proofreading
When the mutilated remains of a young woman are found in an Appalachian Mountain cave, newly sworn-in deputy sheriff Brynn Callahan is forced to track down a killer driven by twisted motives .... read more
Developmental Editing
Among the Irish Travellers living in the Appalachian Mountains of Tennessee, no one forgets and no one forgives. And as former Marine MP Brynn Callahan finds out when she returns home, it's ha... read more
Developmental Editing

Sandra has 131 reviews

Professionalism

Quality

Value

Responsiveness

Kurt K.

Kurt K.

Jul, 2025

Pinned
I am extremely pleased with Sandra's developmental edit of my thriller, "Chasing the Bangkok Dragon." First, she provided an overall assessment, key elements that I need to fix/improve, and an analysis of each of the main characters. All of it was very insightful and actionable. Sandra also suppl...
Read more
Sandra H.
Thank you! I appreciate working with an author who takes their writing seriously and who has a background that shines through the story.
PJ P.

PJ P.

Jul, 2025

Pinned
I can't imagine a better development editor than Sandra. She is uber-talented, offers very thoughtful suggestions which are always spot-on, and follows up when I don't respond right away. I don't know how I got so lucky to be matched with her but I'm very glad I selected her from the list of name...
Read more
Gary M.

Gary M.

Nov, 2024

Pinned
After twelve books together, Sandra and I have developed a chemistry that can't be beat. This is the way editors should work with writers, and I couldn't be more pleased.
Nicole H.

Nicole H.

Nov, 2025

This is the first book I've written and the first editor that I've hired, and Sandra exceeded my expectations. Her feedback is thoughtful and thorough. In addition to providing edits and feedback, she gave me some overarching themes that she believes I need to be aware of that are either not clea...
Read more
Otto S.

Otto S.

Nov, 2025

From the first email Sandra sent me, her professionalism was on full display. After we began working together she met every deadline as promised, with detailed notes She gave detailed notes that were very helpful. I plan to work with her on future projects. She is the best.

Sign up to read more reviews

Create a free Reedsy account to connect with Sandra and thousands of other publishing professionals on Reedsy.

Professionals similar to Sandra

Get a range of offers by requesting quotes from multiple professionals.

Vanessa Anderson

Vanessa A.

15+ years as an enthusiastic editor, helping authors polish prose, sharpen storytelling, and prepare manuscripts for successful publication.

Seattle, WA, USA

100% reply rate

View profile
Claire Strombeck

Claire S.

I have over 15 years' experience editing for top publishers, including Penguin Random House. Contact me for any editorial services.

London, UK

95% reply rate

View profile
Deborah Balogun

Deborah B.

Editor for the Big 5. CIEP member. I specialise in inclusive fiction. Genres: contemporary, thrillers, cosy mysteries, romance. UK & US.

London, UK

100% reply rate

View profile