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Carleen Geisler

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Britt Siess Creative Management·US

Agent profile summary

Represents
adult fictioncontemporary fictionupmarket fictionliterary fictioncommercial fictionhistorical fiction
+21 moregrounded speculative fictionthrillersuspensehorrorromancemysteryadult nonfictionspiritualitymind body spiritfoodagriculturescienceSTEMnatural livinganimalspetscommunityculturepop culturehealthwellness
Looking for
Query Letter, Synopsis, Sample Pages
How to submit
QueryManager
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Recently verified·Last verified: 15 May 2026
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Carleen Geisler is a literary agent at Britt Siess Creative Management based in US. Their list focuses on genres including adult fiction, contemporary fiction, and upmarket fiction. Currently open to submissions. Submissions via QueryManager. For current guidelines, check the agent's own submission page linked below.

Age Categories

Adult

Notes

Only taking novel-length submissions at this time.

Agents with overlapping taste

Shannon Snow

Rosecliff Literary

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RepresentsCommercial fiction, upmarket fiction, chick lit, contemporary fiction, dark romance, erotica, family saga, fantasy, magical realism, urban fantasy, historical fiction, horror, romance, LGBTQ+ fiction, multicultural fiction, mystery, new adult, science fiction, suspense, thriller, women's fiction, young adult
Looking forShannon Snow is an Associate Agent at Rosecliff Literary and is actively building her list. She has eclectic reading taste across most genres in the commercial and upmarket space, seeks books with a unique angle and authors with engaging voices, depth, and nuance, and is especially drawn to vivid, well-developed characterization and stories that make her laugh, cry, or feel emotion. Her official linked form lists commercial, upmarket, romance, thriller, suspense, speculative, historical, horror, mystery, women's fiction, new adult, and young adult categories.
How to submitSubmit through Shannon Snow's official Rosecliff-linked QueryTracker form. The form asks for author details, one-agent confirmation, title, word count, genre, query letter, synopsis, one-sentence pitch, comparable books, AI disclosure, publication status, and the first 5 pages.
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Brent Taylor

Triada US Literary Agency

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RepresentsChick lit, commercial, contemporary, cozy fantasy, cozy romantasy, crime, detective, police, family saga, fantasy, fantasy: magical realism, fantasy: urban, graphic novel, historical, horror, LGBTQ+, literary, middle grade, military, espionage, multicultural, mystery, new adult, offbeat, quirky, romance, romantasy, suspense, thriller, upmarket, women's fiction, young adult
Looking forQuery Letter, Synopsis, One Paragraph Pitch, Comparable Books, First 10 Pages
How to submitSubmit through Query Manager. Unsolicited queries sent to his email address will be deleted unread.
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Jill Marr

Sandra Dijkstra Literary Agency

Closed
RepresentsCommercial fiction, upmarket fiction, dark romance, romantasy, romance, speculative fiction, mystery, thriller, gothic, horror, historical fiction, rom com, magical realism, current events, true crime, science, history, narrative non-fiction, sports, politics, health, nutrition, pop culture, humor, music, memoir
Looking forJill seeks fiction and non-fiction by unrepresented voices, BIPOC and Latinx writers, disabled persons, and LGBTQ+ people. She wants commercial and upmarket fiction emphasizing dark romance, romantasy, speculative fiction, mysteries, thrillers, Gothic, horror, and historical fiction, plus food-centric novels and psychological suspense in the vein of Freida McFadden. For non-fiction, she seeks authors with big, timely, smart messages and deep dives into subcultures, social commentary, and historical projects.
How to submitSubmit via QueryManager at QueryManager.com or JillMarr. Include query letter, 1-page synopsis, brief bio with publishing history, and first 10-15 pages for fiction. For non-fiction, include query letter and full book proposal.
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Laura Rennert

Andrea Brown Literary Agency

Open
RepresentsLiterary fiction, commercial fiction, thriller, horror, science fiction, fantasy, speculative fiction, historical fiction, picture books, middle grade, young adult, romance, mystery
Looking forLaura would love to find fantasy, spec fiction, alternate history, and horror with fresh, original, unexpected reimaginings. She seeks retellings that reinvent underlying traditions, gothic suspense or thrillers, romantasy that is more romantic fantasy than fantasy romance, high concept rom-coms, and sexy historical romance. She also wants thrillers and mysteries with dynamic, unexpected characters and rich psychological insights.
How to submitClick on the QueryManager link in the agent's bio, follow the prompts, and complete all required fields including a short query letter with a description of your work, previous publishing credentials, a short author bio, contact information, and for novels: first 10 pages of text.
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Andrea Somberg

Harvey Klinger Literary Agency

Open
RepresentsLiterary fiction, commercial fiction, upmarket women's fiction, romance, thriller, mystery, fantasy, science fiction, historical fiction, young adult fiction, middle grade fiction, memoir, narrative non-fiction, popular science, parenting, pop culture, humor, how-to, self-help, lifestyle, travel, interior design, crafts, business
Looking forAndrea represents a wide range of fiction and nonfiction, including projects for adult, young adult and middle grade audiences. She actively seeks literary and commercial fiction, upmarket women's fiction, romance, thrillers, mystery, fantasy, science fiction, and historical fiction. In nonfiction, she seeks memoir, narrative nonfiction, popular science, parenting, pop culture, humor, how-to, self-help, lifestyle, travel, interior design, crafts, and business.
How to submitSubmit via email with a short synopsis of your work, author bio, and the first five pages of your manuscript pasted into the body of the email. No attachments.
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Amy Bishop-Wycisk

Trellis Literary Management

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RepresentsFiction, nonfiction, young adult, upmarket fiction, book club fiction, mystery, suspense, historical fiction, literary horror, grounded science fiction, grounded fantasy, narrative nonfiction, cultural criticism, history, pop culture, aapi voices, underrepresented voices, LGBTQ+
Looking forAmy represents fiction, nonfiction, and YA. She is seeking upmarket and book club fiction, mystery or suspense elements, propulsive plots with beautiful writing, historical fiction, literary horror, grounded SFF by women of color, coming-of-age stories, global retellings, expert-driven narrative nonfiction, cultural criticism, history, pop culture, YA with murder and intrigue, immigrant stories, queer stories, girls working for justice, and light-hearted contemporary YA.
How to submitUse the QueryManager route linked from Amy Bishop-Wycisk's Trellis profile and review her current wishlist before querying.
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This profile was last verified on 15 May 2026. PairPi tracks UK literary agents' submission guidelines against their own websites. If you spot something wrong, please email hello@pairpi.com.