"Have you told her about the recent developments of the case?"
"About Nepcote, do you mean?"
"Yes."
"Certainly not," replied Merrington, in a tone of outraged officialism. "To give the girl that piece of information before I know what it means would place such a powerful weapon in the hands of the lawyer for the defence that I should have to withdraw the charge against Hazel Rath at the next police court proceedings if I did not arrest Nepcote in the meantime. I do not want any dramatic developments—as the idiotic newspapers call it—in my cases. There is a certain amount of public sympathy with this girl already."
"I think you stand to gain more than you lose by telling her that Nepcote is suspected."
"I prefer to arrest Nepcote first. We may get him at any moment, and then, I hope, we shall find out where we stand in this case. But what do you mean by saying that I have more to gain than lose by telling the girl about him?"
"If she is keeping silent to shield Nepcote, she is likely to reveal the truth when she knows that there is nothing more to be gained by silence. She will then begin to think of herself. In my opinion, you have now an excellent weapon in your hand to force her to speak."
"Can we go so far as to assume that she is keeping silence to shield him? Let us assume that they went to Mrs. Heredith's room together for the purpose of murder and robbery. The girl, we will suppose, fired the shot and Nepcote escaped from the window with the necklace. Is Hazel Rath likely to reveal such a story when she knows it will not save herself?"
"Your assumptions carry you too far," returned Colwyn. "Our presumptive knowledge does not take us that distance. Till Nepcote's share in the case is explained it is useless indulging in speculations outside our premises. Let us defer inferences until we have marshalled more facts. We do not know whether more than one pair of eyes witnessed the murder of Mrs. Heredith; the theory that Hazel Rath fired the shot is merely a presumption of fact, and not an actual certainty. Much is still hidden in this case, and the question is, can Hazel Rath enlighten us? As she and Nepcote are now both implicated, it seems to me that the best inducement to get her to speak is by letting her know that you have arrested Nepcote. In my opinion, the experiment is well worth trying."
Merrington rose to his feet and paced across the room, pondering over the proposal.