"It is as I thought," he said: "the doctor's slipped again. Had a car waiting for him in Oxford Street and when he saw there were no taxi-cabs about, jumped in and was driven eastward." "Did you get the number of the car?" asked McNorton. Beale smiled. "That's not much use," he said, "he's probably got two or three number-plates." He looked at his watch. "I'll go along to Kingston," he said. "I shan't be able to come with you," said McNorton, "I have a meeting with the commissioner at five." "Before you go," remarked Beale, "you might put your signature to this declaration of my _bona fides_." He laid on the table a blue foolscap blank. "What's this?" asked the surprised McNorton, "an application for a special licence--are you going to be married?" "I hope so," said the other cautiously. "You don't seem very cheerful about it. I presume you want me to testify to the urgency of the case. I am probably perjuring myself." He signed his name with a flourish. "When are you getting the licence and what's the hurry?" "I am getting the licence to-morrow," said Beale. "And the lady's name is----?" "I thought you had noticed it," smiled the other, deftly blotting and folding the form. "Not Miss Cresswell?" demanded the police chief in surprise. "Miss Cresswell it is." "But I thought----" "There are circumstances which may be brought to your official notice, McNorton," said the detective, "for the present it is necessary to keep my plan a secret." "Has it anything to do with the Green Rust?" asked the other jokingly. "A great deal to do with the Green Rust." "Well, I'll get along," said McNorton. "I will telephone the Kingston police to give you all the assistance possible, but I am afraid you will learn nothing from the tramp till the morning, and perhaps not then." He took his leave soon after. "Now, Homo, it is up to you and me," said Beale. "You will have to keep close to me after to-morrow. Make yourself at home here until I come back." "One moment," said Homo, as Beale rose and gathered up his hat and gloves to depart. "Before you go I want you to understand clearly that I am taking on this job because it offers me a chance that I haven't had since I fell from grace, if you will excuse the _cliche_." "That I understand," said Beale. "I may be doing you a very bad turn." "I'll take that risk," said Beale. "On your own head be it," said Homo, his hard face creased in a fleeting smile.