Preview: Link Voices, Season 2

In 1994 Rwanda suffered a devastating genocide. Close to a million were killed by neighbors, friends, even family.

The country has made great strides in economic recovery since then, but "people are not like roads and buildings" says Kiki Katese, pioneering Rwandan theater director. "How do we rebuild a human being?"

Kiki decided to start Ingoma Nshya, Rwanda's first and only women's drumming troupe, open to women from both sides of the conflict. There was only one requirement: to leave the categories of the past at the gate.

The West African country of Mali is a birthplace of the blues, a musical tradition later carried by the transatlantic slave trade to America's cotton fields. Yet today, the music and musicians of Mali are in grave danger. As fundamentalist Islam and sharia law become more widespread, dance and secular music are prohibited, musical instruments are destroyed, and musicians are forced to flee their homeland.

Herman Wallace spent 41 years in a 6-by-9-foot cell in Louisiana, making him the the longest-serving prisoner in solitary confinement in the United States. Imprisoned in 1967 for a robbery he admits, he was subsequently sentenced to life for a killing he vehemently denied. Herman was released in 2013 and died of liver cancer within days. "Herman's House" is a moving account of the remarkable expression his struggle found in an unusual project proposed by artist Jackie Sumell.

Under a dank bridge in Kabul, Afghanistan — the country with the world’s highest rate of opium production and addiction — a squalid group of drug addicts is getting high or fiending for their next fix. Former child bride and self-proclaimed badass Laila offers salvation by inviting these lost souls to the detox clinics she runs with her brother, himself a recovered addict. Fearless and relentless in the face of a corrupt and chaotic society, Laila brings love, hope and the Narcotics Anonymous program to these victims of the global addiction epidemic.