At first, Mare of Easttown looks familiar. The HBO limited series follows an attempt to solve the murder of a young woman and the possibly related disappearances of two others, a plot that’s played out on television more times than can be counted. Its protagonist is a traumatized police detective who pushes boundaries to get to the bottom of the case, a type that’s figured into such crime stories since practically forever. The show is set in a small Pennsylvania town whose modest brick homes, lined up in neat rows, chimney after chimney, are among the first images that appear in episode one, which begins in the azure light of a brisk winter day as the sun slowly rises. Immediately, you feel the sense of melancholy embedded in the cellular makeup of this close-knit, working-class hamlet. That mood, mixed with all those other elements, evokes a number of recent and semi-recent series, including Happy Valley, Top of the Lake, Sharp Objects, and Clarice.