Jimmie Dale got off at the second station down, crossed the street, mounted the steps of the elevated again, and took the next train uptown.  His movements appeared to be somewhat erratic—­he alighted at the station next above the one by which he had made his escape.  Looking down the street it was too dark to see much of anything, but a confused noise as of a gathering crowd reached him from what was about the location of the secondhand store.  He listened appreciatively for a moment.

“Isn’t it a perfectly lovely night?” said Jimmie Dale amiably to himself.  “And to think of that cop running away with the idea that I didn’t see him when he hid in a doorway after I passed the corner!  Well, well, strange—­isn’t it?”

With another glance down the street, a whimsical lift of his shoulders, he headed west into the dilapidated tenement quarter that huddled for a handful of blocks near by, just south of Washington Square.  It was a little after one o’clock in the morning now and the pedestrians were casual.  Jimmie Dale read the street signs on the corners as he went along, turned abruptly into an intersecting street, counted the tenements from the corner as he passed, and—­for the eye of any one who might be watching—­opened the street door of one of them quite as though he were accustomed and had a perfect right to do so, and went inside.

It was murky and dark within; hot, unhealthy, with lingering smells of garlic and stale cooking.  He groped for the stairs and started up.  He climbed one flight, then another—­and one more to the top.  Here, treading softly, he made an examination of the landing with a view, evidently, to obtaining an idea of the location and the number of doors that opened off from it.

His selection fell on the third door from the head of the stairs—­there were four all told, two apartments of two rooms each.  He paused for an instant to adjust the black silk mask, tried the door quietly, found it unlocked, opened it with a sudden, quick, brisk movement—­and, stepping in side, leaned with his back against it.

“Good-morning,” said Jimmie Dale pleasantly.

It was a squalid place, a miserable hole, in which a single flickering, yellow gas jet gave light.  It was almost bare of furniture; there was nothing but a couple of cheap chairs, a rickety table—­unpawnable.  A boy, he was hardly more than that, perhaps twenty-two, from a posture in which he was huddled across the table with head buried in out-flung arms, sprang with a startled cry to his feet.

“Good-morning,” said Jimmie Dale again.  “Your name’s Hagan, Bert Hagan—­isn’t it?  And you work for Isaac Brolsky in the secondhand shop over on West Broadway—­don’t you?”

The boy’s lips quivered, and the gaunt, hollow, half-starved face, white, ashen-white now, was pitiful.

“I—­I guess you got me,” he faltered “I—­I suppose you’re a plain-clothes man, though I never knew dicks wore masks.”