A video on drug kingpin Craig Petties, Queretaro, Mexico and drug culture, featuring the voices of drug treatment clinic director Jose Guillermo del Hoyo and drug prevention official Aitor Juaristi.

I’m writing from Memphis now, making final preparations to go to Mexico to report on drug trafficking links to the South.

How the drug business works and Memphis' role as a major player.

They found Marcus Turner in a ditch in Olive Branch, naked and shot to death.

It was the end of a young man's life and a grim reminder of a larger truth: The Mexican drug war isn't as far away as you might think.

The order that led to Turner's death was phoned in from Mexico, prosecutors say. They say the man on the other end of the line was Craig Petties, alleged to be one of the most powerful and violent drug entrepreneurs the area has ever seen.

A frantic voice came over the radio: a blast had just destroyed Guinea-Bissau's military headquarters. I drove toward the compound and, when I arrived, everyone was still shouting and running through the smoking ruins of the building. Bissau's only ambulance was shuttling back and forth from the hospital, ferrying the bodies of victims. All that four heavily armed soldiers would tell me was that General Batista Tagme Na Wai, head of the army, had just been assassinated.