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Hospital Serial Killer: A Jury In The Dark
By Mark Daly on 31/10/11Share:
BBC Scotland Investigations Correspondent Mark Daly was reunited with former Rough Justice producer Louise Shorter to make Hospital Serial Killer A Jury in the Dark about prisoner Colin Norris. Here, he talks about the making of the film.
Hospital Serial Killer: A Jury in the Dark
Iâ€™ve investigated miscarriage of justice cases before, but never when the prisoner claiming innocence is a convicted serial killer. For that and many other reasons, the case of Colin Norris is at once fascinating and deeply troubling.
Here is a male nurse, bright and with no history of violence, accused of a six-month murdering rampage. He was convicted of poisoning with insulin five frail, elderly patients in his care in hospital.
He was predictably dubbed the â€œAngel of Deathâ€ and got 30 years in 2008. Few would shed any tears for such a monster.
However, if one of the central scientific assumptions which underpin the whole case is flawed which is what my BBC investigation
alleges then we are potentially looking at one of the worst miscarriage cases in recent history.
Our programme team listened to more than a dozen hours of police interviews and read through 35 boxes of evidence. We spoke to witnesses, and to former colleagues of Colinâ€™s.
Few believed him capable of these crimes.
On November 20th 2001 Colin had told colleagues he thought one of his patients, Ethel Hall, would not last the night. Common staff parlance, according to nurses we spoke to.
But that night she suffered an unexplained hypoglycemic episode (extreme low blood sugar) which led to her death three weeks later. A blood test appeared to show high levels of insulin. Colin was immediately in the frame.
West Yorkshire Police started working backwards, and produced another four cases where the women involved suffered unexplained
hypoglycemic episodes. They had all been hitherto certified as having natural deaths but now police had learned Colin Norris had been on shift for each incident, they were being treated as murders.
This was on the basis that unexplained hypoglycemias were believed to be so rare, that a cluster of five within six months was so
suspicious, it must mean foul play.
The new scientific evidence revealed in our programme seriously undermines that case.
Professor Vincent Marks, the worldâ€™s most experienced insulin expert, found that up to 10% of elderly sick in hospital suffer this
condition â€“ meaning it is not that rare at all. He believes Colinâ€™s convictions are unsafe.
Additionally, the film features concerns over the insulin test on Ethel Hall. Despite Colinâ€™s five convictions, it could be that none of the
women involved in this case were murdered.
Digging through the boxes of files, we also found evidence over the way Colinâ€™s alleged victims had been selected. We learned claims that police had told one family their relativeâ€™s death was suspicious and Colin was in the frame. The family were later told the death was no longer suspicious, after police discovered Colin was not working that night.
Lawyers accuse the police of focusing their investigation too narrowly on Colin and cherry picking evidence. The police, for their
part, are sure the right man is in prison.
An application for a fresh appeal, based on the new evidence revealed in our film will be submitted to the Criminal Cases Review
I began investigating this case five months ago with an open mind, and would have dropped it if the evidence didnâ€™t stack up. And I believe Colin Norris is not guilty.