How can you tell if someone is lying to you?

A lot of people will look to the left or right and not look right at you. Also, they might have facial twitches. They might also not look you in the eyes. May go red in the face. May move from foot to foot or even go into another room to avoid answering. Some will question you about something else trying to throw you off track.

Will not look you in the eyes or the eyes will become blank or dart side to side. May go red in the face. May move from foot to foot or even go into another room to avoid answering. Some will question you about something else trying to throw you off track.  Answer After taking hundreds of depositions and preparing clients for trial testimony, the easiest way to tell when someone is lying is how much they elaborate when answering simple questions. For example, when a "yes" or "no" is sufficient, the person will keep going, and going, and going.

The more a person adds to an explanation or answer the more you can be certain they are being less than truthful and/or just plain "full of it".