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.

Mainely Money is the third in the Mainely Mystery series featuring private detective Goff Langdon. It was preceded by Mainely Power and Mainely Fear.

Cost now lives in Brunswick, Maine, with his wife, Harper. There are four grown children: Brittany, Pearson, Miranda, and Ryan. A chocolate Lab and a basset hound round out the mix. He now spends his days at the computer, writing.