All in all it was very good. I have seen it twice and on the second time didn't recognise the killer till half and hour from the end..... My little criticism concerns the identification parade. When the parade is done behind darkened glass, there is no way it can be done unless the suspect is legally represented to insure fair play. They is absolutely no way that any legal representative would allow Melcalfe to accompany is deaf wife during the proceedings. He was in an ideal position to inform his wife of the suspects number. She should have been accompanied by a proper interpreter. Any evidence gained at the parade would have been a waste of time. The rules are that any officer involved in the investigation is not even allowed to be in the same building !!