The doctor pressed home on the brake lever until the steel shoes screamed in protest, but no brakes could bring the heavy scooter to a stop as swiftly as was needful to avoid a crash. It was still traveling at a good rate of speed when it rammed into the barricade and overturned.

Dr. Bird was thrown clear of the wrecked scooter. He landed on soft mud beside the track. As he strove to rise, the beam of a flashlight struck him in the eyes and a guttural, sneering voice spoke through the darkness.

"Don't move, Dr. Bird. It will be useless and will only lead to your early death, a thing I should regret."

"Saranoff!" cried Dr. Bird.

"I am flattered, Doctor, that you know my voice. Yes, it is I, Ivan Saranoff, the man whom you have so often foiled. You drove me from America and tried to bar the road against my return, but I only laughed at your efforts. I returned here only for one purpose, to capture you and to compass your death."

Dr. Bird rose to his feet and laughed lightly.

"You've got me, Saranoff," he said, "but the game isn't played out yet. I represent an organization which won't end with my death, you know."

A series of expletives in guttural Russian answered him. In response to a command from their leader, two men came forward and searched the doctor quickly and expertly, removing the automatic pistol which he carried under his left armpit.

"As for your organization, as you call it—pouf!" said the Russian scornfully. "Carnes, a brainless fool who does only as you tell him, a few half-wits in the Bureau of Standards, some of them already in my pay, and one renegade girl. She shall learn what it means to betray the Soviets and their leader."

"You'll have to catch her first," replied Dr. Bird, a sardonic grin on his face.