“How long have you known him?”

“Only a few weeks.”

“How did you become acquainted with him?”

“I——”

Lena hesitated. She looked at the detective, and her face turned pale.

Carter kept his eyes riveted upon her.

“Lena,” he said, “you must not try to conceal anything from me.”

“Mr. Carter, did Darwin employ you?” Lena asked.

“No. Why?”

“I just wanted to know.”