MARY MATHIS

Let's Double Check That.


" Mary is the ace fact checker who not only identifies areas of concern, but also offers solutions. She can flag problematic sourcing and simultaneously locate alternative and more credible sourcing to use. Mary also has a pulse on reading from a lens of sensitivity, and proposes language edits that enable more responsible storytelling. She is quick to learn a studio's tone and approach, works independently, but also knows when to ask for a second opinion. You can breathe easier knowing you've Mary as a fact checker."

- Lori Segal, Supervising Fact-Checker at Spotify, former Research Director at Teen Vogue and Allure. 

Selected Work

I worked at Spotify for shows on the Parcast network like Dictators, Solved Murders, Conspiracy Theories, and more. Our fact-checking process involves rigorous research and some story-editing. Some of my work involves drawing hard ethical lines and consulting on episodes about Indigenous history.  Here's an example of my fact-checking at Spotify.

The Nation

“The Great Resignation” Is a Great Exaggeration By Ann Larson

Workers are quitting their jobs in record numbers, but it’s not a turning point for labor power.

American Prodigies

Season 3 by Blue Wire Studios

This season of American Prodigies is the story of how Black girls moved from the margins of gymnastics to the core.

ACLU

Operation "Safe" Streets by Lauren Gill

"How Delaware’s most secretive police force plays fast and loose with our communities"

Snap Judgement, PRX

The Handoff By Shaina Shealy 

Mirza is a young Afghan military commander and Deven is his counterpart in the U.S. Marines. 

The Nation

Easy Money by Lauren Gill 

Counties aren’t supposed to use Covid funds to build jails and prisons—but that hasn’t stopped some of them from trying to do it anyway.

Running Smoke

Season 1 by Campside Media 

A white-knuckle true story about fast cars, organized crime, and a NASCAR driver fighting for the future of his nation.

My Special Sauce


I'm direct, self-sufficient and reaaaaally fun to work with. 

I attended the FSJ M.I.T. Fact-checking conference in 2022

I also created the group Fact Check Us and organize webinars and forums so a community of fact-checkers can talk about organizational processes, rates, and bounce questions off each other.

Using Format