He thought of Mr. Mosby, the unwitting cause of it all.

Luther was the mostly unwitting cause of a century-and-a-half of military conflict in Europe.

Alexia was left alone with the unfortunate mummy, unwitting cause of all the excitement.

Continually she was reminded of that vivid episode, of which she had been the unwitting cause.

The two persons who were the unwitting cause of Joan's sudden misgivings rose and quittedthediningcar.

It is never easy to be the unwitting cause of grief or death, but it is part of our world.

And, too, her heart told her that she had been the unwitting cause of this new burden which had come upon daddy's mind.