That was a critical clue to heart damage.

Only Quartz could have known one critical clue in the cover-up of the original murder.

Maybe if she toured any future scenes, some critical clue might present itself.

A lot of critical clues for making the right diagnosis come from the kind of spontaneous comments patients make when you spend a little time with them.

The answers could provide critical clues for identifying a charred body, even a limb.

On and on the doctors asked questions in different ways in hopes that a nuance would evoke a critical clue.

A hundred sets of tracks obscured critical clues, and many of the items in the house, even the bodies, had been handled and moved.

Because you never know what little thing will turn out to be the critical clue.

At first, Wil thought the manner of the murder was a critical clue.

Somewhere in the mass of data that it would generate would be the critical clue.