Law & Order: Criminal Intent2001

[Goren and Eames are pretending to be a "civilian" married couple interested in attending a self-help seminar]

Detective Robert Goren:
Mr. Fuller, we were invited by someone here who works for you.

Detective Alexandra Eames:
We don't know that, honey.

Detective Robert Goren:
Anyway, no one seems to know her, uh... [pauses, looks directly at Fuller] You made us, didn't you? What gave us away?

Randall Fuller:
Her sensible shoes. And her sleeve. It's, uh, shiny from rubbing against her holster. [He looks at Goren] Oh, and your belt is scratched where you clip your badge.

Detective Alexandra Eames:
He's good.