But a new doubt assailed me; would the car itself be a problem?

But, even as I said it, a doubt assailed me.

He fell to thinking, and suddenly a doubt assailed him.

For a fraction of a second, doubt assailed her mind, after all she didn't even know what was exactly in the message.

Before doubt can assail me, I knock on the door.

I raised the cup to my lips, and then doubts assailed me.

Now a thousand doubts assailed her for the decision to approach the Bureau.

Apparently there was nothing to be made, only a vague doubt assailed him.

All Sarah's doubts about what she had set loose upon the world assailed her.

He felt a rush of dismay as his doubts assailed him once more.