Yes, a nutty answer, but he was suddenly curious now.

Nan, suddenly curious, seemed to enjoy my being in suspense.

Why it should matter he couldn't say, but he was suddenly curious.

Garion asked the old man, suddenly curious about it.

It probably didn't matter, but I was suddenly curious.

Spock was suddenly curious about the miniature book in his pocket.

He looked up, meeting those eyes again, suddenly curious; wanting to hear the boy speak.

He was suddenly curious: Why would she want to look at her thesis?

He shouldn't be prying into her personal life now, but he was suddenly curious.

Now that Garth had raised the questions, I found myself suddenly curious.