About Your Book Editor

A picture of best-seller copy editor Heather Sangster of Strong Finish.

I’m Heather Sangster, and I’ve been a book editor working with prominent publishers (including three of the Big Five: Penguin Random House, HarperCollins, and Simon & Schuster), authors, and businesses since 1988 (as Strong Finish since 2006).

Contributing my editorial services to 1000+ titles so far, I’m grateful to play a part in my clients’ achievements: 66 best-sellers, 136 awards, and counting. And I’ve drawn heavily from this high-quality talent well. Along with my editorial expertise, I’ll apply these veteran publishing insights and insider experience to your manuscript.

I’ve honed my technical expertise in multiple mediums, genres, and roles. As a result, I’ve mastered the rules about substantive criteria, style conventions, and grammar guidelines. More so, I know when and how to bend those rules (and even break them) to bring about the best in your book. At this level, there’s an art to it—pedantic adherence to a style manual does not an expert make.

I’m also tuned in to the evolving tastes of literary agents and acquiring editors across the trade genres, keeping on top of forthcoming trends and new horizons in traditional publishing and self-publishing. My mission as a book editor is two-fold: to provide ongoing editorial support to publishers and businesses worldwide; and to help emerging writers produce a professional manuscript that will hold an agent’s/publisher’s interest and stay out of the slush pile or be reader-ready for self-publishing.

You won’t find another editor with a track record like mine—not even close. And that’s why you need me in your corner.

As your book editor, I’ll collaborate with you with respect, patience, and warmth. Your book matters to you, and it matters to me, and I’ll help make sure that it matters to your audience.

Explore the site and review my portfolio to be confident about choosing the best editorial support in the business.