Clark broke eye contact with Harry to turn a challenging look on the other woman.

He gets the challenging look in his face again.

With this last statement he gave Flaring a challenging look.

And her usual expression, she decided, had a challenging look to it.

Elizabeth met her mother's challenging look with one of her own.

She gave me what could only be termed a challenging look.

She threw back her head, and gave her husband a challenging look.

He met the Minister's eyes again, a wry yet challenging look in his own.

She gave me a challenging look from under long lashes.

McCoy had turned and was giving her a challenging look.