Berger ordered diner; and Harry did the same. He was careful not to attract the notice of the man whom he was following.

IT was nearly eight o’clock, when Berger, apparently unsuspecting, left the hotel. Harry trailed him, half a block behind. Then he noticed something of interest.

Another man appeared to be on Berger’s trail, also.

The newcomer attracted Harry’s attention very suddenly. He was only a few paces behind Stanley Berger.

Stanley Berger entered the subway. An express came along, and the three men entered the same car. From the corner of his eye, Harry observed both of the others.

Stanley Berger was a young man of quiet, unassuming appearance. His face seemed moody and meditative. He was well dressed, and his features were intelligent.

The other man was middle-aged. He had a somewhat rough appearance. His clothes were worn; his face was poorly shaven. His eyes were wandering, but keen; and Harry watched them as they became fixed momentarily upon Stanley Berger.

Harry entertained doubts that the man was actually following Berger, until the train stopped at a transfer station. Then Berger left the car, and the rough-looking man followed.

Harry went along, and a few minutes later, the three were gathered together in a crowded car of a downtown local.

Every advantage was in Harry’s favor. Berger, thoughtful, and apparently moody, was paying no attention whatever to those about him. The other man was watching Berger intently.