Amazon has released a trailer for its provocative four-part docuseriesThe Last Narc, which explores the most notorious murder in the history of the DEA – the 1985 kidnapping and murder of DEA AgentEnrique “Kiki” Camarena.

The name may ring a bell for fans of Netflix’s hit scripted seriesNarcos: Mexico, which featuredMichael Peñaas Camarena. The second season of the show starredScoot McNairyas a fellow DEA agent bent on avenging Camarena’s murder.

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The Last Narcaims to tell the true story of who this fallen hero really was, and what really happened to him once he made life difficult for drug cartels. It also follows the one man who risked everything to find out the truth,Hector Berrellez, a highly decorated special agent who was assigned to lead the DEA’s investigation of Camarena’s murder. Berrellez peels back the layers of myth and propaganda to reveal the bone-chilling truth about a conspiracy that stretches from the killing fields of Mexico to the halls of power in Washington, D.C.

Berrellez’s powerful testimony appears alongside that of Camarena’s brave widow, as well as three Guadalajara Cartel insiders. These men were corrupt Jalisco State policemen who, at the time of Camarena’s murder, served as bodyguards to legendary drug lordsRafael Caro QuinteroandErnesto Fonseca Carrillo. Eventually, they became informants for Berrellez and helped him crack the most infamous murder of the War on Drugs.

Directed byTiller Russell,The Last Narcis a co-production of Amazon Studios and Industrial Media’s The Intellectual Property Corporation, whoseEli HolzmanandAaron Saidmanserved as executive producers. Russell previously directed Showtime’sOperation Odessa, as well as the corrupt cop documentaryThe Seven Five, which was quickly slated for a feature adaptation. Russell also directed the upcoming movieSilk RoadstarringJason ClarkeandNick Robinson, and as someone who just finished readingNick Bilton’s extraordinary bookAmerican Kingpin, I cannot wait to see that movie.

The Last Narcwill premiere on July 31 on Prime Video and it looks pretty interesting, so watch the trailer below, and for more on Camarena,click herefor our interview with Peña, who talks about what it was like to play a morally centered character on a show where morals can get you killed.