“It looks that way,” Markham admitted. “Bring the maid in here again, and we’ll see what we can find out.”

When the woman had been brought in, Markham questioned her as to her actions during the afternoon, and learned that she had gone out at about four to do some shopping, and had returned about half past five.

“Did Miss Odell have any visitor with her when you got back?”

“No, sir,” was the prompt answer. “She was alone.”

“Did she mention that any one had called?”

“No, sir.”

“Now,” continued Markham, “could any one have been hidden in this apartment when you went home at seven?”

The maid was frankly astonished, and even a little horrified.

“Where could any one hide?” she asked, looking round the apartment.

“There are several possible places,” Markham suggested: “in the bathroom, in one of the clothes-closets, under the bed, behind the window draperies. . . .”