Every time Alice walked down the stairs carrying her baby she had the same vision. She imagined herself tripping, and tumbling down the seagrass-clad steps. In version one, she kept Bunty hugged into her chest, then landed at the bottom, accidentally crushing the life out of her. In version two, she released Bunty as she fell, then watched as Bunty’s head hit the wall and she collapsed to the floor in a lifeless heap. Did other mothers spend their whole time imagining the various ways in which they might accidentally kill their own babies?