Malignant (S02E06)

The murders of two deliverymen lead Detectives Goren (Vincent D'Onofrio) and Eames (Kathryn Erbe) to a pharmaceutical supplier (guest star Stephen Toblolowsky) who's been tampering with the life-saving, cancer-fighting drugs needed by hundreds of patients - many of whom are dead despite positive survival prognoses from their doctors. However, their probe of the scandal gets sticky when the exhumations of possible victims reveals evidence of an assisted suicide by a elderly husband (guest star Richard Bright) who reluctantly acted at his wife's request to end her suffering. (iTunes)