A big carving knife lay on the table. I picked it up and ran a finger along the sharp edge. Sarah gave a screech and her tea slopped over into the saucer... "I saw that look on your face," Sarah shrilled. "You looked like you want to murder us all, slit our throats in our sleep."
I ran up the back stairs to my room and stood there panting with my back resting against the door. Sarah was right. Murder had been in my mind. Perhaps it was always in my thoughts, pushed back into some dark corner of my brain...