"Back... where it ought to be. Of course."

The smile notably fails to get any less creepy.

"Thank you, Katara."

Look! He can be polite to people he's about to murder!

"The tides. Yes, I see it now."

One hand (his left) lifts slightly, a tiny gesture as though he's pointing out some small flaw, hardly worth mentioning.

Except the gesture is the focus for a telekinetic grasp that closes iron-strong around her torso.

Pity he doesn't yet understand enough about waterbending to realize he shouldn't have left her limbs free.