He could hear the quick, heavy tread of Kedsty's feet After that came the closing of a second door, followed by the rumble of Kedsty's voice.

Kent was disappointed.
The Inspector of Police and Marette were in a room too far distant for him to distinguish what was said.

But he knew that Kedsty had returned to barracks and had discovered what had happened there.

After an interval his voice was a steady rumble.

It rose higher.