"Dead to rights"
I believe is the EXPRESSION.
Breaking Bad Season 5, Episode 14
I wanted to see the EXPRESSION
on your face
The Big Bang Theory Season 12, Episode 19
...and did so
using a stern facial EXPRESSION.
The Big Bang Theory Season 4, Episode 24
...I look at you with an EXPRESSION
of exhaustion...
The Big Bang Theory Season 3, Episode 17
I could deduce by his facial EXPRESSION
and body language that he was sad.
The Big Bang Theory Season 10, Episode 16