Deception was a prevalent theme in epi2 and is it's an important issue to the series as a whole.
I liked how the first five minutes gave us a glimpse of what Sun is capable of doing, at least as far as lying or withholding the truth is concerned. Blaming the maid for the broken ballerina at such a young age was classic - a pristine, glass figurine of innocence in pieces. I mean, she was able to hold her own against her dad as a child, looked him in the eye and everything, but broke down and couldn't even raise her face at him when he caught her in bed. She is definitely one of the underestimated characters on the show.
And if Jin is able to see through her lies, I wonder how much of the truth he really does know about her. What are your thoughts on the glass ballerina allegory?