But as the trip goes on, he begins to doubt the security of his relationship with Jason.

It was difficult to doubt her with the father and son before me.

"I doubt it," Curtis answered, with the same hard amusement in his voice.

He doubted success with a simple attack, but offered no alternatives.

He hoped to make you doubt your sanity with the phone calls and his face at the window.

No one could doubt her safety with him and his very appearance was enough to keep from giving rise to scandal.

Who could doubt it with a line-up like that at the palace?

He doubted anyone with so grand a title traveled alone.

He didn't doubt their efficiency with those weapons they carried.

"I do not doubt it," the girl answered, with a tremulous smile.