Those two factors pointed to the hand of a professional killer.

Judge did not have the nerves of a professional killer.

She wouldn't turn her only family over to the hands of a professional killer.

The two men broke through the flow of people toward the professional killer.

These men were not professional killers, if Miles read them right.

"One look, and I knew this guy was a professional killer."

Unfortunately, during the last hit, the professional killer enters the wrong house.

Then they employed a professional killer to do the job.

The man who's watching me is supposed to be a trained professional killer, isn't he?

There aren't that many openings for a professional killer, outside the Service.