Fear appeared on his face, but so did a grim determination.

"Give me the light," he said and there was grim determination in his voice.

Others had an air of grim determination; the end was near.

Her face was set in an expression of grim determination.

I have come this far he thought with grim determination.

He turned to her with a look of grim determination.

With grim determination, he read the details of her family and life.

He looked at both men and recognized their grim determination.

He knew the grim determination and fear that lived in every one of them.

I've never walked out of anything, but stayed to the end with grim determination.