"I'll read it:

"DEAR SIR,

"Re your advertisement, I should be glad if you would call round
somewhere about lunch-time.
"Yours truly,
"JULIUS P. HERSHEIMMER."


"Ha!" said Tommy. "Do I smell a Boche? Or only an American
millionaire of unfortunate ancestry? At all events we'll call at
lunch-time. It's a good time--frequently leads to free food for
two."

Tuppence nodded assent.

"Now for Carter. We'll have to hurry."

Carshalton Terrace proved to be an unimpeachable row of what
Tuppence called "ladylike looking houses." They rang the bell at
No. 27, and a neat maid answered the door. She looked so
respectable that Tuppence's heart sank. Upon Tommy's request for
Mr. Carter, she showed them into a small study on the ground
floor where she left them. Hardly a minute elapsed, however,
before the door opened, and a tall man with a lean hawklike face
and a tired manner entered the room.

"Mr. Y. A.?" he said, and smiled. His smile was distinctly