"So we started tracing back to where this had come from," he said.

But the first step is to start tracing the lines of power from the top.

"We need to be able to contact the phone company and have them start tracing the ransom call as soon as it comes."

The three climbed out and immediately started tracing the cause of the trouble.

I was about to start tracing my ancestral seed back to its sprouting place.

They started tracing foot steps of about 8 km.

He leaned back against my pillows and started tracing patterns again.

He brought up his right hand and started tracing with his index finger.

If this is the kidnapper, tell the phone company to start tracing the call immediately.

Europol too should start tracing criminals as a matter of priority.