I've watched tons of body language videos that give you complete verification someone is lying.
The body never lies. It always betrays the liar. The world expert on this topic is Pamela Meyer who authored the book Lie Spotting. Below you'll find one of her best videos
Some of the signs to watch a liar's face for:
- Duping delight: he cannot hide his smiles, smirks or laughter
- Nodding of head when he should be shaking No eg when she says "... pedophile".
- Shakes his head to indicate No when he is saying Yes or agreeing with her.
- Swallowing or licking of lips (he swallows) due to nerves.
- Intense eye contact. Normal honest people have normal eye contact. Not too much, not too little.
- They exaggerate when denying. eg "completely and entirely false." Honest person would just say "It's false."
- Fidgeting
- Rubbing the nose or touching the face while speaking. (he avoids that because it's the most well known sign. The man is almost a statue in his latest interview)
- Fake smiles where the eyes don't smile.
- One Lip corner pulled up and in.
This video is from the gunman incident:
This one is a general analysis of the latest interview: