NYPD Blue: Mister Roberts (1999)

Synopsis
After private eye Mike Roberts is murdered, John (Bill Brochtrup) tells Sipowicz about Mike's cryptic warning. It all ties in with the wealthy Malcolm Cullinan (Todd Waring), whom John believes was responsible for the death of the benighted Dolores Mayo. Subsequent events relating to this development cause Jill (Andrea Thompson) to sever her relationship with Cohen (Michael B. Silver). And former series regular Gail O'Grady makes a most surprising cameo appearance -- and to tell any more would be unthinkable. ~ Hal Erickson, All Movie Guide