

He opens the locker to find a briefcase and the address of a brownstone apartment. In the glove compartment, he retrieves a key and a note which instructs him to travel that night from Washington to a locker in New York City's Grand Central Station. While the FBI is concluding that the telegram sender's name and address are fictitious, Allan sees Harris and sneaks out the back fire escape to the car. When he attempts to meet Bleek at the Library of Congress, Bleek sees Harris behind Allan and avoids them both, but later sends Allan a coded telegram advising him to visit a car parked in a nearby lot. Not realizing he is being followed by agent Harris, Allan nonetheless searches his apartment desperately for listening devices.

Linstrum is questioned in his office the next day, after which the FBI makes a short list of suspects from the Atomic Energy Commission, which includes Allan. Soon, the FBI starts an investigation, and when Allan is notified of this by Bleek, he hurriedly drops his camera into a nearby river. Meanwhile, the pill case is passed to an agent who is then hit by a car, allowing a policeman to retrieve the film. Satisfied that Bleek has the film, Allan returns home, despondent, and smashes a plaque which honors his contribution to the field of physics in America. Once again, he deposits the film at the Library of Congress, where a patron almost finds it before Bleek reaches it. When Linstrum arrives unexpectedly, Allan hides behind a chair and narrowly avoids being caught. Hans Linstrum and photographs papers from the safe. In the morning, he breaks into the office of fellow physicist Dr. Finally, Bleek tracks Allan down outside his apartment and drops another note, which Allan reads and then burns. Bleek follows him to his office, where Allan cannot concentrate. Days later, Allan drinks heavily and tries to ignore Bleek's phone signals. The pill case then makes its way across the city, passed from one agent to another until it is ultimately flown to Cairo. After putting the film in a pill case, he leaves the case in the stacks of the Library of Congress, where Bleek retrieves it.

Atomic Energy Commission, and reluctantly photographs secret documents. The next morning, he goes to work at his office, the U.S. Bleek drops a note written on a cigarette wrapper, which Allan surreptitiously picks up and brings back to his apartment to read. Allan Fields responds to a phone signal by meeting his contact, Mr.
