“I speak the truth, Mrs. Lock. The man whom you saw commit the crime was not your husband.”
“Not my husband? Why, the clothes—that long, blonde mustache—the light, long hair—surely——”
“The clothes were a duplicate suit. The hair and mustache were false. The assassin was a well-arranged double of your husband, who took pains that you should see the deed done.
“There was a screen setting close by the window which could easily have been pushed across to shut off your view. But it wasn’t.”
“Why are you so sure it was a double—a disguised man who did the deed?”
“First, because the proof is clear that the crime was done with a full knowledge by the murderer that you saw it, and with due care that you should see it.”
“Well?”
“Your husband, if capable of murder, would surely not have an object in doing it before your eyes, but on the contrary.
“Then you saw your husband leave the room at about two minutes before five?”
“Yes.”