Danny and Baez investigate a homicide in which Baez’s estranged brother, a former drug addict, is the lead suspect. Meanwhile, Frank learns one of his most highly decorated officers, a German Shepherd in the K9 unit, is being accused of police brutality, and Henry investigates the widow of a former NYPD pal who might have had a hand in her husband’s death.

Danny tries tracking down the drug cartel who's attacked a convoy of drugs been transported to be incinerated. Baez is left injured. Frank treads carefully.