Actors may be the best at pretending, but I know I’m a terrible liar. Here is an interesting look at the habits and ticks of liars. May totally suit a role, just make sure not to do any of these when unsure in an audition. Dead giveaways. Check out icoolbuzz’s “How To Tell If Someone Is Lying.”
http://icoolbuzz.com/fun/tell-someone-lying.html