Nancy laughed. "I never thought of that," she said. "It shows how unaccustomed I am to anything in the nature of deception."

"You'll soon improve," returned Colin hopefully. "It's wonderful what one can do after a month or two with the medical profession." He leaned forward and selected another scone from the rapidly dwindling pile. "Now what about that theatre idea of mine?" he continued. "Can't you possibly manage it, Mark? I'll do the thing in a really generous way—stand you dinner and seats and drive you both home in the car afterward."

Mark shook his head reluctantly. "I'd come like a shot if I could," he replied, "but I've about twenty prescriptions to make up and a dozen cases to attend to." He paused. "All the same," he added, "there's no earthly reason why you shouldn't take Miss Seymour."

"Oh, that's not fair," protested Nancy. "I can't go off and leave you to do all the work."

Mark folded his arms. "There's only one thing I demand from my staff," he observed sternly, "and that is complete and unquestioning obedience." He turned to Colin. "What you both want," he added, "is some fresh air and a little healthy amusement. Why not have a run out into the country first? It's a fine evening, and you can get back up West in plenty of time for the theatre."

"Now I call that a jolly bright notion!" exclaimed Colin. "What do you say, Cousin Nancy?"

"It sounds most tempting," agreed Nancy. "All the same, I think it would be horribly selfish. I am sure that if any one needs an evening off it's the doctor. The last thing I promised Mrs. Ashton was not to allow him to overwork."

"I am the head of the family," insisted Mark, "and my orders are that you leave this house directly you've finished tea. Take her for a good long spin to start with, Colin, give her a nice dinner, and then get seats for something really frivolous and cheerful. That's my prescription, and I depend on you to see that it's properly administered."

* * * * * * * * *

With her eyes shining, and her cheeks flushed by the wind, Nancy stepped out of the car on to the comparatively deserted pavement of Whitcomb Street.