“Very likely they did, but, you see, I have no proofs of that. All I can prove is that when you found Robert Erskine's acquaintance impossible to make, that medicine bottle of his gave you your chance. You changed the last but one dose for a deadly solution of morphia, obtained how I can't think. . . .” Pointer knew perfectly, but he wanted her to speak, and she did.
“No, no, no! I never did such a thing!” The sane part of her brain was fighting the drugged part which wanted to babble.
“Oh, yes, you did.”
“If I did, I got it from that sneering, drug-sodden fiend Vaughan.”
“Robert Erskine drank the poison. When it was acting,—I take it you listened at the door—you entered his room, locked the door, unscrewed the back of the wardrobe, fastened the bolt on inside, and dragged the armchair up to it. You're a tall woman and a strong one, but you must have had some difficulty with his body before you got it safely bundled in . . .”
The woman turned livid.
“. . . with your letter to the manager in the pocket. Next you laid in some things of his which you thought would bear out your 'phone about his having gone into the country, screwed the back on again, pushed the wardrobe into position, emptied the medicine bottle on to the balcony, filled in the cough mixture again, and went through all his belongings. His bag you fastened inside a larger bag. . . .”—This last was guess-work, but he saw by her terrified eyes that he had been right.—“Wearing Major Vaughan's shoes, you crept down the back stairs into the street. You had already oiled the lock and opened it at noon. When you had disposed of your bag, and exchanged the shoes for your own, you waited in the theatre and took a taxi back to the hotel. When you heard the arrival of the police—your door was ajar, we noticed—you put on his shoes again, and crept out on to the balcony to peer in through the blind, as you had done once before when Mr. Beale was in the room. You had intended to reach France Saturday night, but the storm which raged made flight out of the question. Even the channel boats did not go. Besides, once you knew the body had been found, you waited on to see what would happen. The telegrams which I sent Mrs. Erskine here were received and answered by Mrs. Clark. You flew to Paris, using her passport, and back again the same day after the interview with Russell and me, an interview which you were expecting and had prepared for after catching sight of Mr. Russell at the hotel.”
Watts shot his chief a crestfallen glance, but the woman broke out excitedly: “She lent me that passport. She helped . . . They all helped . . . They're all in it. Yes, you're right, Inspector, they knew all about it. And ever since then I've been in hell! In hell! I knew it was only a question of time before I should be killed in my turn . . . oh, my head . . . I don't mean that! I don't know what I'm saying.”
“I'll just make a note of what you say about their being implicated too.” Pointer drew out a block of writing paper.
She veered around again, the hatred of years sweeping away every barrier, as the wily police-officer had hoped it would. He had a full confession of the crime, written in the first person, in his pocket, only waiting for her to sign, and for that signature he was working, leaving her no time to recover that cold nerve of hers which had been temporarily broken down, but which was sure to come again later as he well knew. There was too much tension between France and England just then for extradition to be a quick matter when the crime had been committed on French soil, but with the criminal's confession safely at the Yard the police could wait in patience the law's delays.