Lying Liars face

There's one clue that someone is lying, which can be picked out on very close observation. Because the clue can be so slight, it may require reviewing a video tape of the liar's face in order to see the facial nuances that reveal the lie. Given a long enough interview process, a liar will always reveal their lie by making a quick motion their mouth and/or eyebrows in an ugly manner. When seen on freeze frame, it looks like they are making an ugly face on purpose. In fact, it is subconscious, and often so quick, even the trained observer can miss it in person. It's easy to catch when reviewing video tape though. Since I discovered this, I've been able to identity lies (and truths too) on news programs, interviews, politicians, White House staff, etc.
One of the poor liars in the White House is Condalizza Rice. You can see a complete facial shift between almost any other topic and when she's was talking about "facts" that were used to justify the Iraqi War.
Another liar in his interviews was Scott Peterson. He was pretty good at controlling his facial motions, but he wasn't good enough.
The most recent case I've seen is that lady that found the finger in her food. As I watched her interview, I couldn't see any ugly faces (beyond expected disgust when talking about chewing a finger). Then I re-watched the interview, and there it was, plan as day near the beginning of the interview. She compressed and dropped her lips for a split second right after finishing her response to a question. Caught! :)
How do you tell the difference between normal face twitches and a liar's face? Several ways. Most important is the type of movement, particularly with the lips. Often, one or both corners are pulled down, or the upper lip is pulled up in the middle. The pulling up of the upper lip isn't a great sign because several thangs cause this. However, the pulling down of the corners of the mouth is a sure sign because there really is not other reason for a mouth to be doing that. A second factor is the timing of the ugly face movement. A liar's face usually shows up right before answering a question or immediately following the answer.
Want practice identifying liars' faces? Seriously, watch pundants on Fox News and CNN.