FRONTLINE, The New York Times and the Canadian Broadcasting Corporation examine the hidden dangers of vitamins and supplements, a multibillion-dollar industry with limited FDA oversight. Explore the risks of taking mega-doses of vitamins and examine how they are marketed and regulated.

A searing, two-hour investigation places America's heroin crisis in a fresh and provocative light — telling the stories of four individual addicts in Seattle, but also illuminating the epidemic's years-in-the-making social context, deeply examining shifts in U.S. drug policy, and exploring what happens when addiction is treated like a public health issue, not a crime.