Nobody had cared for him and this fact preyed on his mind.

Had he been in danger of forgetting how much the past preyed on her mind?

Which of the three failures preyed on his mind the most was impossible to tell.

The notion preyed on her mind, for she was without a man and had time to think about things.

But as we marched, one thought preyed on my mind.

For one thing, it seemed he would never find Texas, a fact that preyed on his mind.

I'm afraid it preyed on his mind very much to begin with.

There were two in particular who preyed heavily on Blade's mind.

There was much to sort through, and Marty's condition preyed on his mind.

Only afterwards, had so many little things preyed on her mind.