A moment later a man in citizen’s clothing, who had keen eyes, and who was riding a motor-cycle, rounded the corner and puffed placidly along near the two.  He appeared to be looking at the numbers on the other side of the street, but he heard every word that they said as they caught sight of the disappearing carriage and hurried after it.  He had been standing in the entrance of the Y.W.C.A.  Building, an apparently careless observer, while the elevator boy gave his evidence.

The motor-cycle shot ahead a few rods, passed the carriage, and discovered by a keen glance who were the occupants.  Then it rounded the block and came almost up to the two pursuers again.

When the carriage stopped at the side entrance of a hotel the man on the motor-cycle was ahead of the pursuers and discovered it first, long enough to see the two get out and go up the marble steps.  The carriage was driving away when the thin man came in sight, with the baggy man struggling along half a block behind, his padded feet coming down in heavy, dragging thuds, like a St. Bernard dog in bedroom slippers.

One glimpse the pursuers had of their prey as the elevator shot upward.  They managed to evade the hotel authorities and get up the wide staircase without observation.  By keeping on the alert, they discovered that the elevator had stopped at the second floor, so the people they were tracking must have apartments there.  Lurking in the shadowy parts of the hall, they watched, and soon were rewarded by seeing Dunham come out of a room and hurry to the elevator.  He had remembered his promise to his mother about the engravers.  As soon as he was gone, they presented themselves boldly at the door.

Filled with the joy that had come to her and feeling entirely safe now in the protection of her husband, Mary Dunham opened the door.  She supposed, of course, it was the bell-boy with a pitcher of ice-water, for which she had just rung.

“Ah, here you are at last, my pretty cousin!” It was the voice of Richard that menaced her, with all the stored-up wrath of his long-baffled search.

At that moment the man from the motor-cycle stepped softly up the top stair and slid unseen into the shadows of the hall.

For an instant it seemed to Mary Dunham that she was going to faint, and in one swift flash of thought she saw herself overpowered and carried into hiding before her husband should return.  But with a supreme effort she controlled herself, and faced her tormentor with unflinching gaze.  Though her strength had deserted her at first, every faculty was now keen and collected.  As if nothing unusual were happening, she put out her cold, trembling fingers, and laid them firmly over the electric button on the wall.  Then with new strength coming from the certainty that some one would soon come to her aid, she opened her lips to speak.

“What are you doing here, Richard?”

“I’ve come after you, my lady.  A nice chase you’ve led me, but you shall pay for it now.”