Interestingly... just found a study from 2019 showing little to no correlation with Ekman's study a control group & a bogus training group, in detecting lies in videos they watched 

https://web.williams.edu/Psychology/Faculty/Kassin/files/Jordan%20et%20al%20(2019)%20-%20METT.pdf

I came to this after watching the pilot of lie to me again - gosh, it's a great show though