“Certainly not,” she said indignantly.

“Well,” Mason said, “either this isn’t your sister’s handwriting, or else...”

“Of course it’s my sister’s handwriting.

“It couldn’t be a forgery?”

“Why, Mr. Mason, who would want to forge my sister’s handwriting? Good heavens, no! That letter’s filled with little intimate details. I know absolutely it’s from Sis.”

“You share this apartment?” Mason asked.

“Yes.”

“And when do you expect her back?”

“She said she’d be back in about two weeks. If she could get the reservations she wanted, she might be back a boat sooner. She’s going to send me a cablegram as soon as she knows.”

“Well,” Mason said, “I guess you’re entitled to the ten dollars, although I still think... oh, well, never mind.”