How to know if someone is lying

Hi everyone! As you know, we are working in class about the topic of crime and investigations. If you are trying to solve a case and you need to question someone, you must consider the person you are talking to may be lying, so, here is a short video that shows us some ways to detect a liar. If you are interested, you can find much more information about this on the internet.

Hope you like it!

Celia