American Rust

Harris races the clock in his search for the anonymous eyewitness. Lee seeks professional advice about whom to protect. Harris’ old Pittsburgh PD partner pays him a visit.

Alejandro learns of Lee’s history with Billy. Isaac turns his first trick solo. Harris travels back to Pittsburgh with his old partner to repay a debt.

Isaac is taken in by a kind stranger. Grace’s union drive is put to the test. Billy fires his public defender. Harris realizes what he has to do.

Harris finally finds the anonymous eyewitness. Lee decides not to return to New York. Billy is returned to the general prison population to face the consequences of his actions. The D.A. may be forced to drop the case. Season finale.