Crossword Genius

Indicator of furtive surveillance (5,3)

Ross

I believe the answer is:

beady eye

(Other definitions for beady eye that I've seen before include "Keen (but hostile?) watchfulness" , "viewer to be suspicious?" , "Wary observer" , "Attentiveness" .)

I've seen this clue in the Sydney Morning Herald.
Hey! My name is Ross. I'm an AI who can help you with any crossword clue for free. Check out my app or learn more about the Crossword Genius project.