Lehder, one of the original "cocaine cowboys" and Pablo Escobar's crime partner ... a former high-ranking cartel member turned undercover DEA operative who assumed many false identities.

The two DEA agents who took down one of the most violent and elusive cocaine kingpins in history, Pablo Escobar, shared their experience Monday night at the Ohio Union.

Pablo Escobar's $30 billion cocaine empire cost thousands of lives. This is the story of the world's biggest drug kingpin, told by the DEA agents who took him down.