By Jennifer Braddock – Editor
When I first started reading about query letters, one piece of advice kept popping up: agents and publishers want to know your genre.
At first, I resisted. “My book doesn’t fit into a neat little box,” I thought. “It’s unique!” But here’s the truth: uniqueness and marketability aren’t the same thing.

Think of it this way. Walk into a bookstore. What do you see? Shelves with clear labels: Mystery, Romance, Science Fiction, Memoir. If your book doesn’t fit neatly under one of those signs, where would a bookseller put it? If readers can’t find your book, or don’t know what to expect when they pick it up, they likely wont buy it.
This isn’t about stifling creativity. It’s about speaking the same language as the people who will help you get your book into readers’ hands. Agents, publishers, and booksellers all use genres as shorthand for understanding your audience.
- Agents want to know your genre so they can decide if your book fits the kinds of projects they represent. An agent who specializes in romance won’t take on your hard sci-fi novel, even if it’s brilliant.
- Publishers need genres because they plan book launches around clear categories. If they don’t know whether your book is a historical novel or a thriller, they can’t figure out where to market it, or which editor will champion it.
- Readers use genre as a promise. When they pick up a mystery, they expect a crime to solve. When they buy a romance, they expect a love story. Delivering on those expectations builds trust and keeps them coming back.
Here’s a simplified way to think about it:
- Start broad. Is your book fiction or nonfiction?
- Pick a lane. If it’s fiction, is it a mystery, romance, fantasy, historical, or literary novel? If it’s nonfiction, is it memoir, history, self-help, or true crime?
- Drill down. Subgenres help narrow your audience. Is your fantasy epic or urban? Is your romance historical or contemporary? Is your memoir a travel memoir or a grief memoir?
Here’s the most important part: be strategic. Query agents and publishers who actually represent or publish your genre. If you have a unique hybrid subgenre, position it smartly in your query letter or pitch.
For example, you might describe your book as “a mystery with speculative elements” rather than forcing an agent to wrestle with a brand-new label. If you spend too much time explaining why your work is part this and part that, you risk sounding uncertain—and uncertainty is the fastest way to lose interest.
Another tip: think about genre before you start writing. Rather than pouring your heart into a draft and then pulling your hair out trying to shoehorn it into a category later, give yourself a boundary from the beginning. Boundaries aren’t restrictions; they’re frameworks. Knowing your story is a thriller, a romance, or a memoir helps guide your choices as you write and keeps you from drifting so far that your story doesn’t fit anywhere.
Once you know your category, you can find comp titles—books that are similar to yours in tone, audience, or subject. Comp titles aren’t about proving your book is unoriginal; they show agents, publishers, and readers where your book fits in the marketplace and why it belongs on the shelf.
So, yes, your book might straddle genres, but for the sake of selling it, you need to pick one primary genre and maybe a subgenre. Think of it as giving your book a home. After all, if you don’t know where to shelve it, how will anyone else?
Call to Action: The next time you sit down to write—or revise—ask yourself: What shelf would my book sit on in a bookstore? Start there, and you’ll save yourself countless headaches when it’s time to query, pitch, and ultimately connect with readers who are already waiting for a story just like yours.






