When a mysterious "angel of death" poisons a series of hospital victims with cyanide, Detectives Goren (Vincent D'Onofrio) and Eames (Kathryn Erbe) suspect a nurse (guest star Susan Bruce) who fits the typical profile - but when others fall dead outside the care facility, the investigators must widen their search. Even when the cops discover the source to be tainted, over-the-counter painkillers, the victims continue to pile up, and they can't gain any traction with their case until they find a motive -- or at least a source of the killer substance. Jamey Sheridan and Courtney B. Vance also star.
When a Catholic church sexton (guest star Stephen McKinley Henderson) is found murdered in the sanctuary, Detectives Goren (Vincent D'Onofrio) and Eames (Kathryn Erbe) search for a thieving drug addict (guest star Alex Feldman) who works there, but their investigation grows dicey when it appears that the victim was skimming church funds -- and diverting them to the suspect. A further complication arises when the police make another grim discovery that implicates other important church officials in a widening scandal. Jamey Sheridan and Courtney B. Vance also star.