Four Corners goes to the heart of a destructive new epidemic. Reporter Matthew Carney takes his camera into a netherworld inhabited by hardcore "ice" addicts who live for their next hit.

To prepare this report Matthew Carney followed groups of ice users over one summer.

His extraordinary degree of access will challenge and unsettle viewers.

The Broadband Edition includes additional interviews, an interactive chronology, and the history and effects of "ice".

Reporter: Matthew Carney

Producer: Stuart Goodman

Executive Producer: Bruce Belsham