So, as i've seen in "Out of the Past" Tarrlok's secrets were shown. But, were all of them revealed? I have a little hunch that Tarrlok has more secrets than known. Possibly relating to his dad, Yakone? Since he is now a non-bender I have a thought that he will give Korra more of the "scoop on his life" in order to help stop Amon. I also think he hates Korra so much since he wants to avenge his father maybe? I know, he never liked his dad but, c'mon, it was his own father! So does this theory make sense?