‘You could say that,’ says Nelson.

‘Harry’s had a tough year,’ says Michelle, in a sympathetic undertone.

You could say that, too, thinks Nelson, as they finally leave the poolside restaurant and repair to the lounge for coffee. Last year had produced two child-killers, at least three madmen and a curious relationship, the like of which he had never known before. Thinking about this relationship, Nelson stands up suddenly. ‘Going to stretch my legs,’ he explains. ‘Might give Rebecca a quick call too.’ Mobile phone reception is better in the open air.

Outside, Nelson walks around the pool twice, thinking of crimes with which he could charge Ken. Then he retreats into the darkness of the ‘Italian Terrace’, a rather desolate area full of empty urns and artistically broken columns.

He clicks onto Names and scrolls down the Rs.

‘Hallo,’ he says at last. ‘How are you doing?’

Dr Ruth Galloway is, in fact, doing rather badly. Phil, her Head of Department at the University of North Norfolk (UNN), had insisted on holding a planning meeting at five o’clock. As a result, Ruth was late at the childminder’s for the third time that week. As she screeches to a halt in front of the terraced house in King’s Lynn, she can’t help thinking that her name is now on some mysterious blacklist of Bad Mothers. The childminder, a comfortable older woman called Sandra, found after much exhaustive interviewing and reference checking, is understanding. ‘Doesn’t matter, love. I know how it is when you’re working,’ but Ruth still feels guilty. She never knows quite how to talk to Sandra. She’s not exactly a friend but she’s not a student or another academic either. She once heard one of the other mothers (Sandra looks after two other children) having a chat with Sandra in her kitchen, all about her husband and his untidiness, about her other children refusing to do their homework or eat their greens. It sounded so friendly and comfortable, Ruth longed to join in. But she doesn’t have a husband or any other children. And her job as a forensic archaeologist, specialising in long-dead bones, is hardly conducive to cosy kitchen chats.