He screwed it up, with the envelope, turned, and placed it carefully in the middle of the glowing embers of the fire. It began to scorch but took a long time to blaze up. He heard someone approaching and turned with his back to the fire. As he did so the paper caught alight, making a flame bright enough to cast his shadow on the nearest desk. If someone came in and saw it they might try to retrieve the evidence.

The man outside passed, footsteps ringing on the cement floor. Roger stirred the blazing paper with his toe. In a few seconds it was just black ash, glowing red in places and giving off a few sparks which were quickly drawn up the chimney. He went to an easy chair to recover from the shock and to face the obvious fact; the envelope had been put in his pocket either at his own house or in the taxi.

CHAPTER 5

No Welcome for Roger

NO ONE came to the office.

Roger sat in an armchair of faded green hide. Nothing seemed quite real and the appearance of the note in his pocket seemed fantastic. He could remember every word and every characteristic of the lettering, the quality of the white paper and its thickness. He half wished he still had it, but it must have been too dangerous to keep.

Abbott must have searched the raincoat, so the note had not been there at five o’clock. No one had been in Bell Street except his friends and the police. The thought that Morgan might have put it there could be dismissed at once. The more he considered it the more convinced he was that the soft- voiced man of the taxi had inserted it when Roger had got out of the cab.

Roger stood up, and went to the door.

Chatworth’s office was on the next floor. Roger walked to the stairs and met two Detective Inspectors coming down. They looked surprised to see him. Along Chatworth’s corridor a door opened and Superintendent Bliss, broad and fat and with a voice like a dove, almost knocked into him.