Zillah's smashed face convulsed in what might have been a smile.
Copernik's face convulsed and he slapped his long hard thigh.
The handsome dead face absolutely convulsed, like something hit by a car, flopping in the road.
At the sight of the crumpled body, their faces convulsed with terror.
The young man's face convulsed in a mighty frown.
His face convulsed with pain, and he began to scream.
His face convulsed in bitter remembrance as he spat out the words.
Her face convulsed at the bad word, and then appeared to begin to relax.
The sweet young face convulsed and froze; it fell, slumping across its little table.
His face convulsed, as if he re-alized his chance had passed.