As Koko entered the room, Mortimer threw away his book and yawned sluggishly. Koko walked gently up to him, and stood by the arm of his chair.

"I've got a bit of news for you, Jim."

"Go ahead with it."

"I've found out who that girl is."

"What?"

The Long 'Un was out of his chair in a second, all life and fire and eagerness; the transformation was complete.

Koko laughed inwardly; he never laughed out loud.

"Yes, I've found out about her. She's one of the girls at the Milverton Street post-office--she's the girl that takes in the telegrams."

"Are you sure?" exclaimed Jim.

"Certain," said Koko, selecting a cigarette from his little silver case.