Tatiana Maslany exemplifies some fantastic acting in the sci-fi television drama "Orphan Black" in which she plays many characters. As a guest on The Tonight Show starring Jimmy Fallon yesterday, she also displays a textbook classic body language cluster.
Beginning at 0:43, both of Tatiana's eyes are close - yet her forehead muscles are working against this - for along with her eyebrows, they are contracting upward.
This disparity should alert you to emotional dissonance.
In the next moment Ms. Maslany's eyebrows and forehead remain elevated as her mid-face tightens. Tatiana's jaw juts forward and her mouth opening/lips take on a regret configuration.
Then Maslany's eyelids open even wider as the actress's mouth shows an attempt at a sincere smile.
Importantly, her head-neck also briefly laterally tilts
A mouth microexpression of fear is the next word in Tatiana's nonverbal syntax.
The above described nonverbal "cluster" (all four moments closely strung together in a body language sentence) is a classic one for C'est la vie (That's Life) or "Oh well!" - but mixed with a mild amount of social-fear. This is very consistent with her committing a spoiler faux-pas.
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