"Are these the cases?" Grant asked.

"Yes," the girl said. "Those two."

"I am not going to disturb my mother again this afternoon," Marion said, with sudden anger. "I acknowledge that the trunk in her room is large and flat-topped. It has been there without interruption for the last three years."

"Very good, Miss Sharpe. And now the garage, if you please."

Down at the back of the house, where the stables had been converted long ago into garage, the little group stood and surveyed the battered old grey car. Grant read out the girl's untechnical description of it as recorded in her statement. It fitted, but it would fit equally well at least a thousand cars on the roads of Britain today, Blair thought. It was hardly evidence at all. "'One of the wheels was painted a different shade from the others and didn't look as if it belonged. The different wheel was the one in front on my side as it was standing at the pavement, " Grant finished.

In silence the four people looked at the darker grey of the near front wheel. There seemed nothing to say.

"Thank you very much, Miss Sharpe," Grant said at length, shutting his notebook and putting it away. "You have been very courteous and helpful and I am grateful to you. I shall be able to get you on the telephone any time in the next few days, I suppose, if I want to talk to you further?"

"Oh, yes, Inspector. We have no intention of going anywhere."

If Grant was aware of her too-ready comprehension he did not show it.

He handed over the girl to the matron and they left without a backward glance. Then he and Hallam took their leave, Hallam still with an air of apologising for trespass.