leave no trace

Every one of them left a trace in the school's history.

But then if anyone had been here I would have expected him to leave no trace.

She had left no trace for him in the air.

If anyone had been here he'd left no trace of his visit.

Even the time he recently spent in space should have left their traces.

The door closed and left no trace in the wall.

She wanted to leave no trace of her contact with him.

Or was it possible that he could have left no trace at all behind?

A T104 meant leaving no trace, which wasn't going to be easy.

"It's been almost two weeks since they left the hospital, and not a trace of them."