The police managed to track down the owner of the car.

The burglar was traced by one of the things he had left on the scene.

I need to find out exactly what went wrong.

We couldn't find out her whereabouts.

We must go back to the Middle Ages to trace the origin.

I want to find out the source of this irresponsible rumor.

It is difficult to ascertain what really happened.

It was determined that the picking of one's nose is a completely normal act for adolescent boys.

If you write your address on a web-page, anybody can find out where you live if the whim takes them.

I'm hoping we can get to the bottom of that mystery.