Some evidences of a hasty departure were found, but no clews that would give any idea of whither the fugitives had proceeded.
"The Boy Aviators' Flight for a Fortune"
Wilbur Lawton
I told you to drop the gloves so that the pursuers may find clews.
"In Desert and Wilderness"
Henryk Sienkiewicz
The total absence of finger prints and other tangible clews strongly suggested that the deed could have been perpetrated only by a criminal in the Phantom's class.
"The Gray Phantom's Return"
Herman Landon