24: Mega Buzz Spoiler

First I've heard of Dana being a liar. Could she be one of the mole candidates for this season? Thanks to TV Guide for this spoiler:

I'm dying for 24 to start again. What will the new cast members be up to? — Cassandra
You've probably heard Cole Ortiz (Freddie Prinze Jr.) described as a mini-Jack, but I bet you haven't heard Dana Walsh (Katee Sackhoff) described as a duplicitous liar. Now you have! Also: Jennifer Westfeldt's ambitious journalist will do anything for the story — including use those feminine wiles I've heard so much about.