Which preposition to use with sleuth

in Occurrences 5%

What the deuce, then, was the fellow up to, that he should glower and dodge like a sleuth in a play?

of Occurrences 2%

These were counterfeiters, murderers, embezzlers, horse-thieves, confidence men, what notcriminals to satisfy a sleuth of the most catholic tastes; but they were all wanted elsewhereat Altoona, Pennsylvania, or Deming, New Mexico; at Portland, Maine, or Dodge City, Kansas.

off Occurrences 1%

Better be cautious and wait until he had thrown the sleuths off his track.

on Occurrences 1%

But for this and that, I'd be tempted to think you were sleuthing on the trail of some female fair but faithless.

Which preposition to use with  sleuth