The Shadow was gaining definite clues to what actually had happened.

But Joe had the enraging feeling that somewhere in his mind there was a definite clue, and he couldn't think of it.

Once again, however, The Shadow had gained a definite clue.

No definite clue, but the gestalt had been wrong.

He spent a long time in the office, hunting for a definite clue to "Mallory."

The Shadow decided to let him work for a more definite clue.

Though I am pleased to say that he actually wanted to study insects - which is a definite clue.

Wayne Morgan had been seeking definite clues and convincing evidence.

Police have a very definite clue as to the identity of the slayer.

But we'd need some definite clue to find it then.