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 the same time. It was child's play for that clever and daring woman. On the pretext of summoning her mistress, she runs upstairs, slips on a bright jumper and a hat with black curls attached which she jams down over the grey transformation. A few deft touches, and the make-up is removed, a slight dusting of rouge, and the brilliant Zoe Havering comes down with her clear ringing voice. Nobody looks particularly at the housekeeper. Why should they? There is nothing to connect her with the crime. She, too, has an alibi."

"But the revolver that was found at Ealing? Mrs. Havering could not have placed it there?"

"No, that was Roger Havering's job—but it was a mistake on their part. It put me on the right track. A man who has committed a murder with a revolver which he found on the spot would fling it away at once, he would not carry it up to London with him. No, the motive was clear, the criminals wished to focus the interest of the police on a spot far removed from Derbyshire they were anxious to get the police away as soon as possible from the vicinity of Hunter's Lodge. Of course the revolver found at Ealing was not the one with which Mr. Pace was shot. Roger