The police have so far been unable to obtain the slightest clue.

Nothing -not the slightest clue -he never turned up again.

Nobody had the slightest clue what fools we were making of ourselves.

But they were in vain; it was impossible to find the slightest clue.

There was not the slightest clue by which the mystery could be unravelled.

To the fate of its master, however there was not the slightest clue.

Neither my father nor I could ever get the slightest clue.

There was nothing else visible by which they could gain the slightest clue.

Not the slightest clue remained to help him ascertain who had attacked him.

He has not found the slightest clue to its present whereabouts.

But neither sonarscope nor listening devices revealed the slightest clue.

For hours I wandered about, without the slightest clue as to where I was.

As soon as ever we have the slightest clue, we shall communicate with you.

I hadn't the slightest clue how to go about it.

She can't get the slightest clue of who you are.

Okay, they're mine, but I haven't the slightest clue on how they got there.