Conscience (S03E17)

Dr. Ann Ford (Judy Kuhn) swims at the mid-city Y every night at the same time. After arguing with her research assistant, and finding her car defaced, she mysteriously drowns while swimming her laps. Dr. Ford was a neurologist who performed controversial experiments, and was involved in a right to die case. Laraine Farrell (Dee Pelletier) is in a persistent vegetative state due to a heart attack while hiking six years earlier. Her parents want to pull the plug, her husband wants her to stay alive, and her 18-year-old son seems to be siding with his grandparents. Dr. Ford died because someone put the chemical DSMO into her swimming gloves, which was absorbed in her skin, causing her to stop breathing and drown. Her research assistant, Daris (Geoffrey Arend), is the initial suspect but he is cleared. Then Goren (Vincent D'Onofrio) and Eames (Kathryn Erbe) start investigating the circumstances behind Laraine's illness. (iTunes)