“That’s used as a getaway, your ladyship. There’s a room and a door on to a staircase what comes out in the next street. That’s the way the gentry goes when there’s a raid.”

“But don’t the police know about it?”

“It’s a cunning door, you see, my lady. Looks like a cupboard, that’s all.”

Bundle felt a rising excitement.

“I must get in here,” she said.

Alfred shook his head.

“You can’t, my lady; Mr. Mosgorovsky, he has the key.”

“Well,” said Bundle, “there are other keys.”