A Mr. Big sting operation was ruled admissible in a recent Sask. murder trial – but what are they and how do they work?

Confessions extracted through so-called Mr. Big police sting operations tend to produce unreliable confessions, are open to abuses and must be presumed inadmissible in court, the Supreme Court of Canada ruled Thursday.

For the first time, the Okanagan RCMP officer who devised the infamous “Mr. Big” sting goes public about the controversial technique. Robert Buffam reports.