"I have to congratulate you upon playing your part superbly!"
"You heard—"
"Everything."
"Bah!"—with a shiver of repulsion—"it was a hateful part, a despicable part—"
"But one that is absolutely essential if you would discover and bring to justice the murderer of your betrothed husband."
"Then you think—"
"Pardon me; detectives have no right to 'think.' They must know. You have given me a clew, and it is worth working out; that is all. In the meantime, your part in the drama is to keep this man beside you as much as possible, night and day. Watch his most minute act, his lightest word, and report them all to me—everything. Let nothing escape. Don't trust your memory for a single day, but write everything down the moment he has gone. Take care that no act or word of his shall betray you into any exhibition of suspicion; and, above all, don't reject too much his overtures of affection. That part you must play with great care and finesse, neither being too quickly won nor too cold in your demeanor. You think you can assist me so far?"
"I will do it—that, or anything that may be required of me to bring this man to a punishment of his foul crime."
"Good!"
"And in the meantime, you—what will you be doing?"