It's a nightmare that no parent wants to face: discovering that your child has fallen prey to the deadly pull of heroin.
On this week's 20/20, Chris Cuomo follows the journeys of three young people caught in the powerful grip of heroin addiction. In the course of eight months of reporting, 20/20 was aided by Caron Treatment Centers, which has provided treatment for addicts and their families for more than 50 years.