He saw the beautiful brows knit into a sudden frown.

Wulfgar asked, noticing the sudden frown that crossed the woman's face.

He saw Gus's sudden frown and waved away his concern.

More of them, yes, she thought with a sudden, inner frown, but not all.

A sudden frown as he turned out of the bright sun; the face went into shadow.

As the lift stopped she paused before stepping out, a sudden frown on her brow.

He saw Tubruk's sudden frown and smiled to ease the man's worry.

As she does she is watching me, waiting for the sudden frown.

Several moments passed before her cloudy mind registered his sudden frown.

The old scar above Gregory's left eyebrow showed white in a sudden frown.