But he had to admit to a certain curiosity.

And, I must admit, a certain hellish curiosity had come over me.

She was astonished and regarded him with a certain curiosity.

His face still showed no fear, only a certain curiosity.

No caring in their eyes; just a certain dull curiosity.

She turned her face up to him, betraying a certain curiosity.

But a certain sick curiosity and excitement held her helpless.

The young man looked at him with a certain curiosity in his eyes, but said nothing.

I'll admit I checked the menu with a certain curiosity.

Also, she felt a certain shameful curiosity: what in the world could they be doing?