It was naturally no surprise to find his bed-chamber door unlocked and slightly ajar. Lanyard made sure of the readiness of his automatic, strode into the room, and shut the door quietly but by no means soundlessly.

He had left the shades down and the hangings drawn at both windows; and since these had not been disturbed, something nearly approaching complete darkness reigned in the room. But though promptly on entering his fingers closed upon the wall-switch near the door, he refrained from turning up the lights immediately, with a fancy of impish inspiration that it would be amusing to learn what move Roddy would make when the tension became too much even for his trained nerves.

Several seconds pa.s.sed without the least sound disturbing the stillness.

Lanyard himself grew a little impatient, finding that his sight failed to grow accustomed to the darkness because that last was too absolute, pressing against his staring eyeb.a.l.l.s like a black fluid impenetrably opaque, as unbroken as the hush.

Still, he waited: surely Roddy wouldn't be able much longer to endure such suspense....

And, surely enough, the silence was abruptly broken by a strange and moving sound, a hushed cry of alarm that was half a moan and half a sob.

Lanyard himself was startled: for that was never Roddy's voice!

There was a noise of m.u.f.fled and confused footsteps, as though someone had started in panic for the door, then stopped in terror.

Words followed, the strangest he could have imagined, words spoken in a gentle and tremulous voice:

"In pity's name! who are you and what do you want?"

Thunderstruck, Lanyard switched on the lights.

At a distance of some six paces he saw, not Roddy, but a woman, and not a woman merely, but the girl he had met in the restaurant.

V

ANTICLIMAX

The surprise was complete; none, indeed, was ever more so; but it's a question which party thereto was the more affected.

Lanyard stared with the eyes of stupefaction. To his fancy, this thing pa.s.sed the compa.s.s of simple incredulity: it wasn't merely improbable, it was preposterous; it was anticlimax exaggerated to the proportions of the grotesque.

He had come prepared to surprise and bully rag the most astute police detective of whom he had any knowledge; he found himself surprised and discountenanced by _this_...!

Confusion no less intense informed the girl's expression; her eyes were fixed to his with a look of blank enquiry; her face, whose colouring had won his admiration two hours since, was colourless; her lips were just ajar; the fingers of one hand touched her cheek, indenting it.

The other hand caught up before her the long skirts of a pretty robe-de-chambre, beneath whose edge a hand's-breadth of white silk shimmered and the toe of a silken mule was visible. Thus she stood, poised for flight, attired only in a dressing-gown over what, one couldn't help suspecting, was her night-dress: for her hair was down, and she was unquestionably all ready for her bed....But Bourke's patient training had been wasted if this man proved one to remain long at loss. Rallying his wits quickly from their momentary rout, he rea.s.serted command over them, and if he didn't in the least understand, made a brave show of accepting this amazing accident as a commonplace.

"I beg your pardon, Miss Bannon--" he began with a formal bow.

She interrupted with a gasp of wondering recognition: "Mr. Lanyard!"

He inclined his head a second time: "Sorry to disturb you--"

"But I don't understand--"

"Unfortunately," he proceeded smoothly, "I forgot something when I went out, and had to come back for it."

"But--but--"

"Yes?"

Suddenly her eyes, for the first time detached from his, swept the room with a glance of wild dismay.

"This room," she breathed--"I don't know it--"

"It is mine."

"Yours! But--"

"That is how I happened to--interrupt you."

The girl shrank back a pace--two paces--uttering a low-toned monosyllable of understanding, an "_O!_" abruptly gasped.

Simultaneously her face and throat flamed scarlet.

"_Your_ room, Mr. Lanyard!"

Her tone so convincingly voiced shame and horror that his heart misgave him. Not that alone, but the girl was very good to look upon. "I'm sure," he began soothingly; "it doesn't matter. You mistook a door--"

"But you don't understand!" She shuddered.... "This dreadful habit! And I was hoping I had outgrown it! How can I ever explain--?"

"Believe me, Miss Bannon, you need explain nothing."

"But I must...I wish to...I can't bear to let you think...But surely you can make allowances for sleepwalking!"

To this appeal he could at first return nothing more intelligent than a dazed repet.i.tion of the phrase.

So that was how...Why hadn't he thought of it before? Ever since he had turned on the lights, he had been subjectively busy trying to invest her presence there with some plausible excuse. But somnambulism had never once entered his mind. And in his stupidity, at pains though he had been to render his words inoffensive, he had been guilty of constructive incivility.

In his turn, Lanyard coloured warmly.

"I beg your pardon," he muttered.

The girl paid no attention; she seemed self-absorbed, thinking only of herself and the anomalous position into which her infirmity had tricked her. When she did speak, her words came swiftly:

"You see...I was so frightened! I found myself suddenly standing up in darkness, just as if I had jumped out of bed at some alarm; and then I heard somebody enter the room and shut the door stealthily...Oh, please understand me!"

"But I do, Miss Bannon--quite."

"I am so ashamed--"

"Please don't consider it that way."

"But now that you know--you don't think--"

"My dear Miss Bannon!"