I came across this list the other day and thought it was very enlightening. I think we all deal with people like this at some point in our life, although I hope you don't have to very often. Many times controlling, manipulative people have these same characteristics, because they are good at lying.
Here is a list of common characteristics of pathological liars.....
*Contradict what they say.
*Lie about even the smallest things.
*Add exaggerations to every sentence.
*Change their story all the time.
*Act very defensively when you question their statements.
*Believe what they say is true, when everyone else knows it isn't.
*Lie when it is very easy to tell the truth.
*Lie to get sympathy, to look better, to save their hide, etc.
*Fool people at first but once they get to know them, no one believes anything they ever say.
*Are extremely manipulative.
*Have been caught in lies repeatedly.
*Will never fess up to the lies.
*Are a legend in their own mind.
*May have a personality disorder.