Betrayal also effectively shuts down the Charlie/Paula angle, brutally as his problems come to her restaurant.

Paula: is this the part where you say “I can explain?”

Charlie: you took the words right out of my mouth.

Paula: …

Charlie: I’m gonna have to disappear for a while.

Paula: How about forever.

What little security blanket Charlie had got taken from under him. This is the first episode where we don’t visit Alphaverse. Oh but Reena’s last scene is priceless.

“I worry about you Karl.”

It’s the way he says it, all of a sudden Charlie and Karl’s relationship is so much more than it was.