Over the years, Cost has owned a video store, a mystery bookstore, and a  gym. He has also taught history and coached just about every sport  imaginable.

During those years, since age eight actually, the true passion has been  writing. I Am Cuba: Fidel Castro and the Cuban Revolution (Encircle  Publications, March, 2020) was his first traditionally published novel.

Cost has now written six books in the Mainely Mystery Series starting with Mainely Power, six books in the Clay Wolfe Trap Series starting with Wolfe Trap, and two books in the Brooklyn 8 Ballo Series starting with Velma Gone Awry. A few historical fiction pieces fill out the shelves. The Not So Merry Adventures of Max Creed is book one in the  Max Creed Chronicles. In October of 2026, he will debut his Jazz Jones and January Queen historical PI mysteries with 1955.

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

www.mattcost.net