Twin Peaks: What's Going On in Argentina?

The Return contained references that are baffling to anyone who hasn't seen Twin Peaks:

The episode centers around Buenos Aires, Argentina, where Agent Phillip Jeffries (David Bowie) was stationed before he mysteriously disappeared.

In Part 5, he used his phone call to ring up a mysterious black box in Buenos Aires that turned into a little tiny rock after he delivered a cryptic message -- "the cow jumped over the moon."

Earlier in the episode, a woman in Las Vegas who seems to be managing the hit men sent to kill Dougie sent a text message that said "Argent 2" to that same box.

Perhaps, like BOB and MIKE, they used to kill together until Jeffries (or some kind of bizarro-Jeffries, who knows) had a change of heart and is now devoted to stopping Evil Cooper.

People transform in David Lynch's works -- earlier this season, we saw the Evolution of the Arm, and in Lost Highway Bill Pullman turned into Balthazar Getty halfway through.