Meet New Bedford’s police chief, Paul Oliveira. He’s had a hand in both of the stories we’ve already heard. And the Spotlight Team's reporting shows there's a dark backstory behind Oliveira's rise to the top of the department. Oliveira wrote the playbook on using informants. In this episode, a former New Bedford narcotics cop who worked alongside the chief for nearly two decades agrees to go on the record about everything he’s seen… and taken part in.

Learn more about your ad choices. Visit megaphone.fm/adchoices