“Madame has gone to her apartment,” she whispered.

“Has she a servant? Or friends with her?”

“No, sir.... I did see her speak to two foreign looking gentlemen in the elevator when she arrived this morning.”

Cleves nodded; the matron pointed out the direction in silence, and he went rapidly down the carpeted corridor, until he came to a door numbered 408.

For a second only he hesitated, then swiftly fitted the master-key and opened the door.

The room—a bedroom—was brightly lighted; but there was nobody there. The other rooms—dressing closet, bath-room and parlour, all were brilliantly lighted by ceiling fixtures and wall brackets; but there was not a person to be seen in any of the rooms—nor, save for the illumination, was there any visible sign that anybody inhabited the apartment.

Swiftly he searched the apartment from end to end. There was no baggage to be seen, no garments, no toilet articles, no flowers in the vases, no magazines or books, not one article of feminine apparel or of personal bric-a-brac visible in the entire place.

Nor had the bed even been turned down—nor any preparation for the night’s comfort been attempted. And, except for the blazing lights, it was as though the apartment had not been entered by anybody for a month.

All the windows were closed, all shades lowered and curtains drawn. The air, though apparently pure enough, had that vague flatness which one associates with an unused guest-chamber when opened for an airing.

Now, deliberately, Cleves began a more thorough search of the apartment, looking behind curtains, under beds, into clothes presses, behind sofas.