Obviously the same doubt had crossed his mind.

For a moment, just a moment, an errant doubt crossed the Doctor's face.

The faint doubt that she might have been a little hasty in her conclusions crossed her worried mind.

No doubt that is partly because what she does crosses artistic boundaries.

A moment's doubt crossed the dark eyes, then he smiled.

For an instant, a fleeting and definite doubt crossed Perren's emotionless face.

And as long as I was steadfast, then no doubts ever crossed your minds, any of you.

Yet even as he heard himself saying these words, a sudden doubt crossed his mind like a shadow.

As that doubt crossed my mind I stopped on my way out of the town.

Mrinalini gets a glimpse, and a doubt crosses her mind - she seems to recognize him.