Dark Knight's Black Agents
The dealers were seen leaving the yacht “Final Offer,” which is known to be owned by the Penguin. (Infiltration*)
*Normally you don’t get clues off of General abilities. Sometimes you do, though. In this case, I was going to make this clue appear as part of a later chain, but you got it early because of the successful Infiltration roll.
The drugs are supplied by the Red Hood’s Gang(Intimidation)