Reed provides all the needed background on Jesse Stone in this article on The Life Sentence
Jesse is, at first blush, a seemingly uncomplicated protagonist: strong, silent, handsome, athletic, tough, capable. The thing is, he is so much more. Some come to the series because they love the supporting characters like Molly Crane, Luther “Suitcase” Simpson, or Captain Healy. Some come because they are fascinated with villains like Crow and Mr. Peepers. Some come because they have first seen the TV movies starring Tom Selleck as Jesse. For whatever reason readers come to the series, they usually stick around.