Amazon has released a trailer for its provocative four-part docuseries The Last Narc, which explores the most notorious murder in the history of the DEA -- the 1985 kidnapping and murder of DEA Agent Enrique “Kiki” Camarena. The name may ring a bell for fans of Netflix's hit scripted series Narcos: Mexico, which featured Michael Peña as Camarena. The second season of the show starred Scoot McNairy as a fellow DEA agent bent on avenging Camarena's murder. The Last Narc aims to tell the true story of who this fallen hero really was, and what really happened …