Each season of A Forgotten History explores a key story from New Zealand's past with fresh perspective on what happened at the time, and the lasting impacts of the moment.

Season 2: Mr Asia

In the 1970s, the Mr Asia drug syndicate was one of the largest sellers of heroin in the world. The group began in New Zealand, with two men at its centre: Marty Johnstone and Terry Clark.

As the syndicate spread around the world, for a few years, they were living the high life. And then, they started killing each other.

Hosted by John Daniell and Noelle McCarthy. Presented by NZ Herald and Bird of Paradise Productions.

Season 1: Tangiwai.

Christmas Eve, 1953. A historic year for New Zealand ended tragically, when 151 people died in the country's worst ever rail disaster. 70 years on, with only a handful of survivors still alive, did New Zealand learn the lessons of this horrific accident - or have we forgotten this tragedy?

Hosted by Hamish Williams. Produced by the Motuihe Group for the New Zealand Herald.

Both seasons made with funding from NZ on Air.