The inspector’s curiosity had been aroused by Max’s demeanour. The latter had briefly related how he had called, to find the house empty, and both occupier, his daughter, and the servants gone. “Did you see any servant when you were there this evening?” “Yes; the man-servant Costa.” “Ah, a foreigner! Old or young?” “Middle-aged.” “A devoted retainer of his master, of course.” “I believe so.” “Then he may have been in his master’s secret—most probably was. When a master suddenly flies he generally confides in his man. I’ve known that in many instances. What nationality was this Petrovitch?” “Servian.” “Oh, we don’t get many of those people in London. They come from the East somewhere, don’t they—a half-civilised lot?” “Doctor Petrovitch is perfectly civilised, and a highly-cultured man,” Max responded. “He is a statesman and diplomat.” “What! Is he the Minister of Servia?” “He was—in Berlin, Constantinople, and other places.” “Then there may be something political behind it,” the officer suggested, beaming as though some great flash of wisdom had come to him. “If so, it don’t concern us. England’s a free country to all the scum of Europe. This doctor may be flying from some enemy. Russian refugees often do. I’ve heard some queer tales about them, more strange than what them writers put in sixpenny books.” “Yes,” remarked Barclay, “I expect you’ve had a pretty big experience of foreigners down in Whitechapel.” “And at Vine Street, too, sir,” was the man’s reply, as he leaned against the edge of his high desk, over which the flaring gas jets hissed. “Nineteen years in the London police gives one an intimate acquaintance with the undesirable alien. Your story to-night is a queer one. Would you like me to send a man round to the house with you in order to give it a look over?” Max reflected in an instant that if