Chief Del Harris investigates after a dead body turns up.

Harris' investigation continues. Isaac leaves town. Billy and Lee reunite as Buell celebrates a shotgun wedding.

Grace enlists help in her effort to unionize the dressmakers. The sheriff gets an anonymous tip about the murder in the steel mill.

Isaac is taught the rules of the road. The sheriff searches for evidence.

Harris searches for the anonymous eyewitness. Lee seeks advice.

Alejandro learns of Lee's history. Harris returns to Pittsburgh.

Billy falls in with a questionable crowd. Isaac travels alone.

Isaac is taken in by a kind stranger. Billy fires his public defender.

Harris finally finds the anonymous eyewitness. Season finale.