If the sugar had been dissolved in your tea, the quantity that you drank would have contained enough aconitine to lay you out within a few minutes; which would account for Mrs.Schallibaum's anxiety to get clear of the premises.

She saw you drink from the cup, but I imagine she had not seen you turn the sugar out." "No, I should say not, to judge by her expression.

She looked terrified.

She is not as hardened as her rascally companion." "Which is fortunate for you, Jervis.

If she had not been in such a fluster, she would have waited until you had poured out your tea, which was what she probably meant to do, or have dropped the sugar into the milk-jug.