Or his thoughts will darken to memories of when his daughter Elizabeth was afflicted with heart disease as a child.

Again, as he kissed me, painful thoughts darkened his aspect.

After the first glad tidings and the departure of the Reef an unpleasant thought had darkened her mood.

Conn's thoughts darkened, and Floria seemed to withdraw as they followed the little party of matrix workers some steps ahead.

He looked at the Captain, whose thoughts had darkened his face.

But maybe it's not so welcoming to Ree, she thought, her thoughts abruptly darkening.

I wondered what else he might find in my office, and my thoughts darkened.

As the group resumed moving forward, her thoughts darkened.

Her thoughts darkened with the planet below; night engulfed their only hope.

Thus the shadow deepened, and the thought of death darkened the hearts of the people.