Dutch psychologist Aldert Vrij believes that he has identified the precise ingredients of “good liars”:  manipulativeness, acting, expressiveness, physical attractiveness, natural ability to perform, experience with lying, confidence, emotional camouflage, eloquence, well-preparedness, unverifiable responding, information frugality, original thinking, rapid thinking, intelligence, good memory, truth adherence / bending the truth, and decoding suspicion in the listener.

Read about it here:  http://www.scientificamerican.com/blog/post.cfm?id=18-attributes-of-highly-effective-l-2011-07-07&WT.mc_id=SA_20110721