"How will you know if they've turned Mirov loose?" Tom asked. He was wondering if he might persuade his captor to let him make a second call. "Don't worry. Mirov knows how to contact me." Half an hour dragged by--then forty minutes. Suddenly the door buzzer rang sharply. The man jerked to attention, obviously startled. He glanced at Tom, then toward the direction of the sound, moistening his lips nervously. "He must have been expecting just a phone call," Tom decided. The buzzer shrilled again. This time the man got up from his chair, gagged Tom hastily with a handkerchief, and went to the door. "Who's there?" he asked loudly. "Mirov! Let me in, Duffy!" replied an accented voice from outside. With a look of relief, Duffy started to open the door--then froze as he saw not only Mirov, but two police officers and Ames accompanying him. "Are you the one who's going to put up bail?" one of the officers demanded. Duffy floundered, scenting danger but unable to pick up any clue from Mirov's face. "Why--uh--yeah, maybe. How much is it?" "Ten million! Can you raise it?" Ames snapped sarcastically. As Duffy gaped in confusion, the officers suddenly flung their weight forward. The door flew open and Duffy was thrown back, almost losing his balance. Beyond, through the small vestibule, Ames caught a glimpse of Tom on the sofa. "There he is!" Ames shouted. Moments later, Tom was untied. Mirov and Duffy were handcuffed together. The young inventor shook hands joyfully with his rescuers. "Nice going, Harlan! Boy, I was sweating icicles here, wondering if you'd be able to decipher all my double talk!" "You made the numbers clear enough," the security chief said with a grin, "but it took a while to guess what they stood for. And then, of course, we had to trace the address through the telephone company." Eying the ugly bruise on Tom's forehead, Ames added, "Sure you're all right?" "Right now I feel swell!" Tom declared, chuckling. He told of his kidnaping, while one of the officers took down the details. The prisoners were taken off to jail in the police squad car. Tom and Ames, meanwhile, in the security chief's high-powered sedan, drove to the scene of Tom's capture. They found his sports car badly damaged. The right side was wedged against the utility pole, which was leaning at a crazy angle. Ames whistled and shook his head. "Boy! You're lucky you got off with just a bruise, Tom!" "You're telling me," the young inventor agreed ruefully. After calling a repair garage to send out a wrecker, they drove to the Swifts' home. Mrs. Swift and Sandy, previously unaware of Tom's plight, were horrified to hear what had happened. The sight of Tom's bruise also upset them.