They were aware of the hazards that confronted Lawler and his men--hazards enough without the additional menace of the invisible power, of which most of the inhabitants of Willets knew nothing.
However, Caldwell knew.

He was standing in the doorway of the Willets Hotel; and his face was drawn and seamed with gravity as he watched.
Gary Warden knew.

For he stood in the street in front of the Wolf, watching, his eyes glowing with malice.
Singleton knew.

He was standing near Warden, in the grip of a malign anticipation.

His lips were bestially pouted.
"Showed yellow at the last minute," he whispered to Warden; "only drivin' about half of them.