Whichever way you turn, you encounter mystery and a closed door." "The papers may spring the lock of that door at any moment.

Publication does much in a case of this kind.

To-morrow we may be in a much more favorable position.

Meantime, let us recount the facts it is our business to clear up." "On what hypothesis ?" "On all hypotheses.

We are not sure enough of our premises, as yet, to confine ourselves to one." "Very good, these are the ones which seem to me to be of the greatest importance: "Whose hand carried the bow from cellar to gallery?
"Was it the same which carried the arrow from one gallery to the other?
"Is it possible for an arrow, shot through the loophole made by the curving-in of the vase, to reach the mark set for it by Mr.Travis' testimony?
"Which one of the men or women known to be in the museum when this arrow was released has enough knowledge of archery to string a bow?
A mark can be reached by chance; but only an accustomed hand can string a bow as unyielding as this one.
"Who telephoned to Madame Duclos; and of what nature was the message which sent her from the hotel so precipitately that she not only left the most important part of her baggage behind but went away without making adequate provision for the young girl confided to her charge?
"Does this mean that she had been made acquainted with the fate of the young girl; and if so, by whom ?" "Business enough for us all," was the Inspector's comment as Gryce paused in this enumeration.