Alex Slater is a Sanford J. Greenburger Associates / GreenburgerKids agent who specializes in middle grade and young adult fiction, with a particular appetite for voice-driven, darkly funny, or suspenseful stories that grab readers from the first page.
In brief
Alex Slater focuses squarely on MG and YA fiction — no adult titles, no picture books, no nonfiction appear in any signals, making this a genuinely category-focused agent.
The stated wishlist emphasizes immediate reader connection, either through a distinctive voice or an unusually original premise — pitches should lead with one or the other, not both as equal claims.
A Coen Brothers sensibility is the clearest taste signal on record: tight plotting, dark humor, and vivid, off-kilter characters are the sweet spot; straight-serious literary or issue-heavy contemporary without a propulsive plot is a harder sell.
Thriller and suspense sit at the top of the wishlist alongside humor and dark fiction — writers with a genre-blended MG or YA project (funny-dark, thriller-with-voice) are well positioned here.
Query status is unverified from public signals; writers must confirm current open/closed state directly via Alex's submission email or agency page before sending.
Lately
Alex describes the ideal submission as something that grabs a reader immediately — either through an unusually strong narrative voice or through a premise that feels genuinely original — and cites a Coen Brothers sensibility as the clearest shorthand for the aesthetic sweet spot: fast plotting, dark comic notes, and vividly drawn characters.
What Alex is looking for
YA is a primary focus. Alex wants projects with an immediate hook — either a voice so distinctive readers are locked in from line one, or a premise original enough to feel genuinely fresh. Contemporary, thriller/suspense, low fantasy, humor, and dark fiction are all welcome. The ideal YA pitch has propulsive plotting and a tonal edge: think sharp, a little dangerous, and not easily categorized.
MG sits alongside YA as a top priority. Alex has singled out thriller and suspense as favorite sub-genres within MG, and the Coen Brothers comparison applies here too — quick-moving plots, dark or absurdist laughs, and memorably colorful characters. Pure issue-driven or straightforwardly sweet MG is less the target than something with genuine narrative momentum and an unusual angle.
Suspense is explicitly flagged as a favorite sub-genre across both age categories. Thriller-inflected MG and YA — especially projects that balance tension with wit or dark humor — appear to be the highest-heat niche. Writers with a genre-blended, plot-forward manuscript that doesn't fit cleanly into a single shelf should lead with the thriller element.
Humor and dark fiction are explicitly welcomed, and the Coen Brothers reference suggests these work best when combined rather than standing alone. Purely comedic or purely dark projects are fine, but the combination — dark laughs, morally complex characters, plots that move — is closest to what Alex describes as 'extremely ideal.'
Low fantasy (fantasy elements woven into an otherwise grounded world, rather than full secondary-world epic fantasy) is on the welcome list. High fantasy with extensive world-building or a large cast of invented proper nouns is not mentioned and is likely a harder sell; lean into the realistic stakes and character work when pitching a fantasy project.
Not the right fit
Taste fingerprint
How to query Alex
Send queries to ASlater@sjga.com — address the email directly to Alex Slater (the wishlist specifies letters should be addressed to Alex personally).
Write your query letter like back-cover or flap copy: punchy, vivid, and in a voice that matches the book. Alex explicitly says to model the pitch on the language of your favorite book's jacket — this is a concrete instruction, not a vague suggestion.
Lead with the element that makes your book immediately connective: either the voice (quote a line or describe its quality specifically) or the premise (the freshest, most original angle). Don't bury either under biography or backstory.
If your project has a Coen Brothers quality — dark humor, morally complicated characters, snappy pacing — say so directly in the letter. Alex uses that comparison as an aspirational benchmark, so it reads as shared language rather than name-dropping.
Genre-blended projects (e.g. darkly funny thriller, low-fantasy suspense) are a natural fit; frame the blend as a feature, not an apology.
Avoid lengthy world-building explanations or extensive backstory in the query — the emphasis on 'quick plotting' and 'concise' pitching signals that economy of language is valued.
Verify the current open/closed status on the agency website before submitting, as the last-known status could not be confirmed from available public records.