that's the man on the beat who heard the shot and investigated--
Murphy noticed that in spite of all the racket we made breaking down
the door last night, no one in that flat showed any interest. I
tried to get in touch with them this morning. Nothing doing. Either
they weren't home, or wouldn't answer the bell."

"That looks bad," commented Morgan. "You mentioned in your report
that you talked with the janitor. Did he drop anything about them
that you didn't think worth while putting in the report?"

"The janitor simply told me that a man and his daughter lived in the
flat, and that he thought the man was away a good deal; so he
supposed he must be a traveling man. They have always seemed to be
quiet people. He has never even seen them have any company."
"That's suspicious, too," declared Morgan. "Normal people usually
have SOME company. Is that all?"

Tierney nodded.

"Now," prompted Morgan, "you said you had another suspicion."

"You bet!" exclaimed Tierney, straightening up in his chair. "That
guy, Marsh--underneath here."

"'Great minds'," laughed Morgan. "I sort of focused on that man
myself after reading your report just now."

"Well, here's the way I look at it," explained Tierney. "When
ordinary folks hear fighting and shooting in the middle of the
night, they generally stick their heads under the covers and lie