"Well--what of it?"

"Nothing--except that I think I may be of some use to you."

Another inference forced itself into Tuppence's mind:

"You followed me here?"

"I took that liberty."

"And in what way do you think you could be of use to me?"

The man took a card from his pocket and handed it to her with a
bow.

Tuppence took it and scrutinized it carefully. It bore the
inscription, "Mr. Edward Whittington." Below the name were the
words "Esthonia Glassware Co.," and the address of a city office.
Mr. Whittington spoke again:

"If you will call upon me to-morrow morning at eleven o'clock, I
will lay the details of my proposition before you."

"At eleven o'clock?" said Tuppence doubtfully.

"At eleven o'clock."

Tuppence made up her mind.