When an old woman is found dead in an arson-caused apartment fire, Dunbar and Bettancourt investigate. And the man who found Dunbar's missing guide dog, Hank, asks Dunbar a favor -- to counsel his nephew who is also losing his sight.

In the series finale, a boxing promoter is killed, and three possible suspects emerge: his girlfriend; a damaged fighter that he didn't want in the ring; and his nephew (who was also his business partner). Meanwhile, Dunbar considers working without a gun.