When three keen-eyed men actually caught him at it?

Standing with him was a weathered, keen-eyed man in his late thirties.

About then, a keen-eyed, bearded man arose from a porch chair and sauntered up to join them.

The other was a keen-eyed, sharp-faced man, whose gaze roamed everywhere.

A keen-eyed man was standing behind a desk.

Waldo was a tall, keen-eyed man, not much older than Marshall.

In another quarter, another keen-eyed young man was making rounds of his own.

The Shadow watched the keen-eyed man lean back into his chair.

Someone brought one and the keen-eyed man flashed the beam below.

He was saved that trouble when a wiry, keen-eyed young man strolled into the office.