William jumped at the noise and looked up to find his daughter the culprit.

I am sure that we will find the culprit there.

Like everyone else on the plane, I looked around in disgust to find the culprit.

Upon his release, he is determined to find the culprit.

In order to prove his innocence, he must find the culprit.

"If I know him, he is probably off to find the culprit who stole his research."

He also tells him to stay out of sight until they have found the real culprit.

Finally they found the culprit: It is the security guard.

A $5,000 reward was offered if we could find the culprit.

He takes it upon himself to find the real culprit.