There, across the room, calmly sipping some coffee, was the handsome young man from the next apartment—­the man whom she had felt sure, or at least almost sure, was a murderer, about whom she had been wondering all day long, picturing him as a hunted criminal fleeing from the law.  Chatting interestedly with him was another man, a young man in the uniform of a lieutenant in the navy.

What did it all mean?  Why was the black-mustached man watching them so intently?  Her eyes turned back to him.  He was still sitting there, leaning forward a little, his brows in a pucker of concentration, his eyes still fixed on the pair opposite.  It looked almost as if he was trying to read their lips and tell what they were talking about.

Jane thrilled with excitement.  The black-mustached man, she decided, must be a detective.  She recalled that he had said to her it was because she lived at the address she did that she was available for the mission for which he wanted her.  Did he, she wondered, know about the mysterious death in the street outside their apartment house?  Was that the reason he was spying on her neighbor?  But what could be his motive in seeking to involve her in the matter?

Unable to find satisfactory answers to her questions she gave herself up interestedly to studying the faces of the two young men across the room.  Neither of them, she decided, could be much more than thirty.  The face that only a few hours before she had seen utterly convulsed with bitter hate, now placid and smiling, was really an attractive one, not in the least like a murderer’s.  Frank, alert blue eyes looked out from under an intellectual forehead.  A small military mustache lent emphasis to a clean-shaven, forceful jaw.  His flaxen hair was neatly trimmed.  His linen and clothing were immaculate, and the hand that curved around his cup had long, tapering, well-manicured fingers.  The cut of his clothing, his manners, everything about him seemed American, yet there was an indefinable something in his appearance that suggested foreign birth or parentage, probably either Swedish or German.  The man with him was smaller and slighter.  Despite the air of importance his uniform gave him, it was palpable that he was the less forceful of the two, his handsome face, it seemed to Jane, betraying weakness of character and a fondness for the good things of life.

“Come, daughter,” said Mrs. Strong, rising, “we must be going.”

So intent was Jane on her study of the two men that her mother had to speak twice to her.

“Yes, mother,” she answered obediently, rising hastily as the hint of annoyance in her mother’s repeated remark brought her to a realization of having been addressed.

Letting her mother and Mrs. Starrett precede her in the doorway she paused to look back at the scene that had interested her so strongly.  What could it mean?  What was going on?  How was she involved in it?