She would have known exactly how to cover her tracks.

The more we know the better we'll be able to cover our tracks.

To cover their tracks, they set the place on fire, but something went wrong.

But then I thought he might come back to try to cover his tracks.

He tried to cover his tracks, but I can tell.

There was only one way to cover his tracks now.

He did this for a reason other than to cover his tracks.

It was the best they could do to cover their tracks.

Taking the radio would have been a simple way to cover his or her tracks.

"And he killed almost a million people to cover his tracks?"