Scopolamine comes from Columbia. Known on the street as Devil’s Breath, this drug literally grows on trees. According to this Vice documentary, the merest whiff of this stuff causes you to become a living zombie, seemingly coherent but highly suggestible. It can be slipped in your drink, blown in your face, or spread by skin contact. Victims empty their own bank accounts and hand over the cash without the criminals having to do a thing.
Vice went to Columbia with the intention of experimenting with the drug themselves. In the end they were handling the stuff with rubber gloves and face masks, and were glad to be getting the hell out of there. Truly frightening stuff.