A quick knock came on the door. Blake said, in a hard voice.
"Yeah! Who is it?"
"Slater," was the reply. "Tell the boss we got the train cleaned out. We're all ready to set it loose."
In the light of the open door, Blake looked at O'Toole. The Irishman was already in one of the Silver Mask uniforms. His face was hidden and he looked like one of the gang.
"Tell him the boss will be all set in a minute," Blake said. "I've got to get into one of these outfits."
O'Toole flung the door open wider and pushed the bodies of the silent guards out of sight.
"We'll be out in a minute," he said to Slater. "Get her ready to roll."
"Yes sir," Slater answered him respectfully. "The cab is all fixed, and the motors are turning. The hidden door has been opened so we better make it snappy."
O'Toole nodded.