On this statement the whole implication of Tracey and the Alexanders by Sarah stands or falls. It falls for the reason that the Temple porter had seen no stranger pass the gate that night, nobody but Templars going to their chambers. The one fact riddles the rest of Sarah's statement in defence, but, as it is somewhat of a masterpiece in lying invention, I shall continue to quote it. "Mary Tracey would have gone about the robbery just then, but I said it was too soon. Between ten and eleven she said, 'We can do it now.' I told her I would go and see, and so went upstairs, and they followed me. I met the young maid on the stairs with a blue mug; she was going for some milk to make a sack posset. She asked me who were those that came after me. I told her they were people going to Mr Knight's below. As soon as she was gone I said to Mary Tracey, 'Now do you and Tom Alexander go down. I know the door is ajar, because the old maid is ill, and can't get up to let the young maid in when she comes back.' Upon that, James Alexander, by my order, went in and hid himself under the bed; and as I was going down myself I met the young maid coming up again. She asked me if I spoke to Mrs Betty. I told her no; though I should have told her otherwise, but only that I was afraid she might say something to Mrs Betty about me, and Mrs Betty might tell her I had not been there, and so they might have a suspicion of me." There is a possibility that this part of her confession, the tale of having met the young maid, Nanny, may be true.[21] And here may the truth of the murder be hidden away. Very likely it is, indeed, that Sarah encountered the girl going out with the blue mug for milk to make a sack posset, and she may have slipped in by the open door to hide under the bed until the moment was ripe for her terrible intention. On the other hand, if there is truth in the tale of her encountering the girl again as she returned with the milk--and her cunning in answering "no" to the maid's query if she had seen Mrs Betty has the real ring--other ways of getting an entry were open to her. We know that the lock of the vacant chambers opposite Mrs Duncomb's would have yielded to small manipulation. It is not at all unlikely that Sarah, having been charwoman to the old lady, and with the propensities picked up from her Shoreditch acquaintances, had made herself familiar with the locks on the landing. So that she may have waited her hour in the empty rooms, and have got into Mrs Duncomb's by the same method used by Mrs Oliphant after the murder. She may even have slipped back the spring-catch of the outer door. One account of the murder suggests that she may have asked Ann Price, on one pretext or other, to let her share her bed. It certainly was not beyond the callousness of Sarah Malcolm to have chosen this method, murdering the girl in her sleep, and then going on to finish off the two helpless old women.