But at the same time doubt had crept into her mind.

Now a doubt was creeping into his mind for the first time.

His story may be absolutely true, but doubts crept into my mind as I read.

It was only after we came to London and began our new life that the doubts crept in.

"Doubt crept into the back of my mind," he said.

He was quiet for a few moments before doubts must have crept into his mind.

If she let her thoughts take shape, the doubts would creep in.

But others were earlier, and yet earlier Then a small doubt crept into his mind.

But the doubt never crept into Key's thought process.

Doubt had crept in, and with it a fierce longing to live.