At least, not one I can get hold of without getting the police on my trail.

More importantly, the police got on their trail and soon captured them.

The fellow bought a new car; we got on his trail after he left town.

"Got a lot of determined people on our trail, most especially including the one in orbit."

And the longer he took getting back on their trail, the more difficult it would be to hunt them down.

But he's yellow when the police get on his trail.

What'll be interesting, if they ask Carl to get on their trail.

"We've got a clean read on its trail to the surface, but then it just stops."

He had to get on Veronica's trail while it was still hot.

We've got ground to cover before himself gets on our trail.