The Water's lovely

'Weeks went by when Ismay never thought of it at all. Then something would bring it back or it would return in a dream. The dream began in the same way. She and her mother would be climbing the stairs, following Heather's lead through the bedroom to what was on the other side, not a bathroom in the dream but a chamber floored and walled in marble. In the middle of it was a glassy lake. The white thing in the water floated towards her, its face submerged, and her mother said, absurdly, "Don't look!"' The dead man was Ismay's stepfather, Guy. Now, nine years on, she and her sister, Heather, still lived in the same house in Clapham. But it had been divided into two self-contained flats. Their mother lived upstairs with her sister, Pamela. And the bathroom, where Guy had drowned, had been demolished. Ismay and Heather get on well. They always have. They never discuss the changes to the house, still less what happened that August day. But now, with painful inevitability, hidden truths start to emerge.