you really cant.
No
Maggie has the power to tell if someone is lying. Charles also has the power to tell if someone is lying.
Lying.
Usually you can tell if someone is lying by the look on his/her face, they either look too serious or they are slightly smirking.
It is nearly impossible to tell if someone is lying through a text message. So you should either call the person or ask them in person
She has all the normal abilities but is able to tell if someone is lying
Polygraph operator.
Not telling someone is not a lie. If you don't say anything and not tell them, you aren't lying because your not saying anything. However, if you tell them that whatever your keeping from them is nothing, you are most likely lying.
Ask them. And hope they are not lying.
no people are too stupid to figure that out
The Lady K and JC Show - 2013 How to Tell When Someone Is Lying - 1.4 was released on: USA: 5 February 2013
in cardcaptors the libra card can tell if someone is lying or not, but it was never and epidode