I do know, however, that they didn't leave there until about three o'clock in the morning." "You--you don't know who the men were ?" Houston, forcing himself to be casual, had asked the question.

The young doctor shook his head.
"No--except that they were from Boston.

At least, the doctors were.

One of the nurses knew them.

I suppose the other man was a district attorney--they usually are around somewhere during an experiment." "You never learned with what murder case it was connected ?" "No--the fact is, it passed pretty much out of my mind, as far as the details were concerned.