In a low, whispered voice, The Shadow began to question his contact agent.

Mann served as contact agent between the active workers and their mysterious chief.

Mann was also a contact agent, through whom The Shadow's active workers reported.

The Shadow's whisper gave important instructions to the hidden contact agent.

Where the others were active and frequently in the field, Mann acted as a contact agent.

His job was that of contact agent and cutout.

Harry stepped into the restaurant and quickly phoned the contact agent.

"You had her contact agents on behalf of your brother, who's working for a private company."

Mann was another of The Shadow's contact agents who served by day.

Communication ended with his contact agent, The Shadow performed a new action.