"You look simply awful, old chap," pursued Jack cheerily. "Where on earth have you been for the last month? I wrote to York and got the letter returned."

"Oh! I've been up and down," said Frank impassively.

"With the people you were with before—the man, I mean?"

"No. I've left them for the present. But I shall probably join them again later."

"Join...!" began the other aghast.

"Certainly! This thing's only just begun," said Frank, with that same odd impassivity. "We've seen the worst of it, I fancy."

"But you don't mean you're going back! Why, it's ridiculous!"

Frank stopped. They were within sight of the house now and the lights shone pleasantly out.

"By the way, Jack, I quite forgot. You will kindly give me your promise to make no sort of effort to detain me when I want to go again, or I shan't come any further."

"But, my dear chap—"