“So far so good,” said the Secret Service man. “Now let’s return to your office.” They walked back to the Custom-house. “How do you know it was twelve-fifteen when you got back?” asked the detective.
“I looked at the clock, to see how long I could stay in the wireless room.”
“Was anybody in the office then?”
“Mr. King was. He sat at his desk, but his back was toward me and he was busy so that I am sure he did not notice me.”
“What did you do next?”
“I went directly into the wireless room.”
“Let’s take a look at it.”
They passed through one or two of the office rooms and then into a small inner room that had been made for a sort of storeroom, but was little used for any purpose. The Secret Service man looked around the room.
“What did you do after you came here?” he demanded.
“I shut the door, so I would not be interrupted. Then I sat down at my instrument and called my old chums at home.”