“I’m trying to find the right word,” said Grice. “She’s tired out, suffering from physical and probably mental exhaustion. There’s nothing organically wrong with her, and a week’s rest will probably put her right. Mentally—well, it’s hard to say. If her memory’s gone completely, she might be unwell for a long time.”

“Why “if”?” asked Rollison.

“How can you be sure that a stranger has lost her memory?” asked Grice. “You can’t check. We’ve got to take her word for it, and it’s early for that.”

“The natural scepticism of a policeman,” said Rollison. “Do the doctors suggest that she might be putting on an act?”

“They’re non-committal.”

“The natural self-defence of a doctor!”

“Look here,” said Grice, “time’s getting on. What made you come along?”

“This,” answered Rollison.

He took the photograph from beneath his coat and handed it to Grice, telling him everything relevant to it as Grice studied the face. Grice looked up.

“Have you got the envelope?”

“Yes,” said Rollison, and took the envelope, folded, from his pocket. “I ran over it for prints, but I don’t think you’ll find more than Jolly’s, mine and the postman’s. That’s curious, isn’t it?”

“I suppose it is,” said Grice. “Whoever packed it wore gloves;

is that what you’re driving at?”

“Yes. No one handled the photograph with bare fingers, as far as I can find out—there are only my prints on ft. The mystery lady wasn’t in a state of mental or physical exhaustion when that photograph was taken, was she?”

“She looks very much all there,” said Grice. “What do you make of it?”

“Absolutely nothing,” said Rollison.

“I mean, of the photograph being addressed to The Toff?”

Rollison frowned. “It could be that someone who knows her knows also that she is in trouble and thinks I might be able to help. It suggests that whoever knows her and had the photograph has heard a fair amount about me, and perhaps even knows me.”