Matt Cost was a history major at Trinity College. He owned a mystery bookstore, a video store, and a gym before serving a ten-year sentence as a junior high school teacher. In 2014, he was released and began writing. And that's what he does. He writes histories and mysteries.

Cost has published six books in the Mainely Mystery series, starting with Mainely Power. He has also published six books in the Clay Wolfe Trap series, starting with Wolfe Trap. There are two books in the Brooklyn 8 Ballo series, starting with Velma Gone Awry. For historical novels, Cost has published At Every Hazard and its sequel, Love in a Time of Hate, as well as I Am Cuba.

His most recent work is a thriller series, The Modern-Day Chronicles of Max Creed, with the second book, EveryThing vs. Max Creed, published in May of 2026.

Matt co-hosts Big Blend Radio's Pets, Plots & Poisons podcast alongside fellow mystery author BJ Magnani.

Watch his Big Blend Radio “Getting to Know You” Interview below or download/listen to the audio version on Podbean.

Cost now lives in Brunswick, Maine, with his wife, Harper. There are four grown children: Brittany, Pearson, Miranda, and Ryan. Cost now spends his days at the computer, writing.

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