David Ross was jailed in 2013 for running a ponzi scheme that resulted in thousands of New Zealand investors losing millions of dollars.

David Ross, the former director of the failed company Ross Asset Management, was jailed in November 2013 for 10 years and 10 months, with a minimum non-parole period of half that time.

The ponzi scheme he'd been running collapsed in 2012, owing investors $115 million.

Ross's fraudulent scheme was frozen in 2012 with 200 investors who had made money and 600 who lost money.

A year later, he pleaded guilty to charges laid by the Serious Fraud Office and the Financial Markets Authority.

At the conclusion of the trial, Judge Denys Barry called Ross a liar and a thief and said the scale of his offending is unprecedented in New Zealand.

Former New Zealand Herald Wellington business editor Hamish Rutherford describes how he came to follow the story and what he discovered.

Go to this episode on rnz.co.nz for more details