The great detective did not answer; he merely gave an expressive little French gesture, as though the question was not worth commenting upon.
"Why, what was her motive?" asked Speed.
For the first time in their acquaintance a shade of perplexity seemed to come over the enthusiastic face of the volatile Frenchman.
"You are what you call smart, you Chicago people," he said, "and you have in a moment struck the only point on which we are at a loss."
"My dear sir," returned Speed, "that is the point in the case. Motive is the first thing to look for, it seems to me. You said as much yourself. If you haven't succeeded in finding what motive Jane Morton had for poisoning her employer, it appears to me that very little has been accomplished."
"Ah, you say that before you know the particulars. I am certain we shall find the motive. What I know now is that Jane Morton is the one who put the poison in his cup of coffee."
"It would take a good deal of nerve to do that with twenty-six people around the table. You forget, my dear sir, that she had to pass the whole length of the table, after taking the cup, before giving it to Mr. Brenton."
"Half of the people had their backs to her, and the other half, I can assure you, were not looking at her. If the poison was ready, it was a very easy thing to slip it into a cup of coffee. There was ample time to do it, and that is how it was done."
"May I ask how you arrived at that conclusion?"
"Certainly, certainly, my dear sir. My detectives report that each one of the twenty-seven people they had to follow were shadowed night and day. But only two of them acted suspiciously. These two were Jane Morton and Stephen Roland. Stephen Roland's anxiety is accounted for by the fact that he is evidently in love with Mrs. Brenton. But the change in Jane Morton has been something terrible. She is suffering from the severest pangs of ineffectual remorse. She has not gone out again to service, but occupies a room in one of the poorer quarters of the city—a room that she never leaves except at night. Her whole actions show that she is afraid of the police—afraid of being tracked for her crime. She buys a newspaper every night, locks and bars the door on entering her room, and, with tears streaming from her eyes, reads every word of the criminal news. One night, when she went out to buy her paper, and what food she needed for the next day, she came unexpectedly upon a policeman at the corner. The man was not looking at her at all, nor for her, but she fled, running like a deer, doubling and turning through alleys and back streets until by a very roundabout road she reached her own room. There she locked herself in, and remained without food all next day rather than go out again. She flung herself terror-stricken on the bed, after her room door was bolted, and cried, 'Oh, why did I do it? why did I do it? I shall certainly be found out. If Mrs. Brenton is acquitted, they will be after me next day. I did it to make up to John what he had suffered, and yet if John knew it, he would never speak to me again.'"