Heres a rather unique technique to detect lies by reading eye body language.
If you ask a question to a right-handed person, and he looks to the left in an upward direction, that means he is thinking or visually constructing an image in his mind. If he looks to the right in an upward direction, he is recalling or visually remembering something that actually happened.
So lets say you ask him, Where were you when the child fell down? If he looks up to the left, he might be making up a story to cover the real incident. If he looks up to the right, he might be recalling what actually happened (in reality).
This method may help you determine if you want to accept their explanation or not, while also taking into account other factors.
Note that the meaning of these eye directions would have the reverse interpretation for a left-handed person.
Remember also that you should not solely rely on reading eye body language to detect lies. Its better if you combine it with your assessment of other body language signals for a more accurate interpretation.
http://www.articlesbase.com/self-im...lies-by-reading-eye-body-language-396592.html
Interesting take here on EyesforLies:
http://eyesforlies.blogspot.com/2009/02/crystal-sheffield-on-geraldo-rivera.html
This is one of (if not THE) foremost expert on deception:
Paul Ekman
http://www.paulekman.com/about.html