If you suspect someone is lying - ask them to do this...

There are a lot of strategies for detecting a liar...

If you’re just not buying the story that someone is telling, ask them to tell you again - backwards. It’s a favorite of many law enforcement and intelligence experts. Liars often have a very difficult time sticking to their story when telling it out of order. Pay close attention to detail and watch their body language. Liars will often start to fidget if they feel they’ve made a mistake in their story.

Silence can also be golden in lie detecting. Make sure you don’t interrupt the liar. They are waiting for verbal cues that you are buying their story or think they’re lying. No comment from you can be their worst enemy.