Something was beginning to bother me, to pick at my mind.

I knew that already, she argued back at her mind.

Another question had been nagging at her mind, and now she put it into words.

All at once her mind tried to close into itself.

The memory of what he'd seen beat at Michael's mind.

As he ran, one thought returned to him and beat at his mind like a heart: Two.

An idea was knocking at his mind, trying to get in.

She worried at her mind, trying to force the memories to return, but nothing worked.

But the sense of danger increased, pushing at her mind.