He wondered what he should say if she asked him what the appointment was, but she showed no curiosity.  He had ordered dinner for the two of them when he took the rooms, and proposed to spend the evening with her quietly.  He was in such a hurry to get back that he took a tram along the Vauxhall Bridge Road.  He thought he had better break the fact to Norah at once that he could not stay more than a few minutes.

“I say, I’ve got only just time to say how d’you do,” he said, as soon as he got into her rooms.  “I’m frightfully busy.”

Her face fell.

“Why, what’s the matter?”

It exasperated him that she should force him to tell lies, and he knew that he reddened when he answered that there was a demonstration at the hospital which he was bound to go to.  He fancied that she looked as though she did not believe him, and this irritated him all the more.

“Oh, well, it doesn’t matter,” she said.  “I shall have you all tomorrow.”

He looked at her blankly.  It was Sunday, and he had been looking forward to spending the day with Mildred.  He told himself that he must do that in common decency; he could not leave her by herself in a strange house.

“I’m awfully sorry, I’m engaged tomorrow.”

He knew this was the beginning of a scene which he would have given anything to avoid.  The colour on Norah’s cheeks grew brighter.

“But I’ve asked the Gordons to lunch”—­they were an actor and his wife who were touring the provinces and in London for Sunday—­“I told you about it a week ago.”

“I’m awfully sorry, I forgot.”  He hesitated.  “I’m afraid I can’t possibly come.  Isn’t there somebody else you can get?”

“What are you doing tomorrow then?”

“I wish you wouldn’t cross-examine me.”

“Don’t you want to tell me?”

“I don’t in the least mind telling you, but it’s rather annoying to be forced to account for all one’s movements.”

Norah suddenly changed.  With an effort of self-control she got the better of her temper, and going up to him took his hands.

“Don’t disappoint me tomorrow, Philip, I’ve been looking forward so much to spending the day with you.  The Gordons want to see you, and we’ll have such a jolly time.”

“I’d love to if I could.”

“I’m not very exacting, am I?  I don’t often ask you to do anything that’s a bother.  Won’t you get out of your horrid engagement—­just this once?”

“I’m awfully sorry, I don’t see how I can,” he replied sullenly.

“Tell me what it is,” she said coaxingly.

He had had time to invent something.  “Griffiths’ two sisters are up for the week-end and we’re taking them out.”

“Is that all?” she said joyfully.  “Griffiths can so easily get another man.”

He wished he had thought of something more urgent than that.  It was a clumsy lie.

“No, I’m awfully sorry, I can’t—­I’ve promised and I mean to keep my promise.”