Here is the promo for The Legend of Korra Episode 4, The Voice In The Night
Thanks to AvatarLegendsTV on Youtube for uploading the video.
This along with the Episode description
“Korra is recruited to join Councilman Tarrlok’s task force which tries to rid the city of Equalists.”
Is what we know about this episode. Definitely set up to be almost a part 2 to The Revelation, a real thriller we have to look forward to.