Substance D
- otherwise known as Death
- is the most dangerous drug ever to find its way on to the black market. It destroys the links between the brains two hemispheres leading first to disorentation & then to complete & irreversible brain damage. Bob Arctor undercover narcotics agent is trying to find a lead to the source of supply but to pass as an addict he must become a user & soon without knowing what is happening to him he is as dependent as any of the addicts he is monitoring.