Look under any rock and you'll find a new clue.

I've been all over this place in the last hours, and I haven't found a clue.

I wish someone would tell me when we find a clue.

"My service has found clues to some activity in deep space," he said.

He felt like a detective who has found a clue.

She hoped to find a clue in his books to why he had been killed.

And now we're here, he's found a clue to something.

But he found a revealing clue in the water itself.

Some analysts found clues to the future of the company in the action by the 18-member board.

I didn't gather from your report that you had even found a clue.