It doesn’t meet the conditions I specified - not nearly.
1. He was not convicted of the 1982 murder of his wife. This would be a no body case (albeit more than 40 years ago) but no conviction was obtained.
2. He was convicted of the 2000 murder of Sandra Bernan but there was a body and forensics in this case.
In the MM case, there is no body and no forensics. How can the prosecution even prove death?
Murders without a body
Allison McGarrigle - vanished in June 1997 and was formally declared dead eight years later. Paedophiles Charles O'Neill and William Lauchlan were later jailed for her murder.
Arlene Fraser - disappeared from the family home in Smith Street, Elgin, Moray, on 28 April, 1998. Her husband Nat was found guilty of her murder after a second trial in 2012
Suzanne Pilley - The Edinburgh book keeper went missing in May 2010. Her lover David Gilroy was later convicted of her murder and burying her in a remote part of Argyll.
Lynda Spence - The businesswoman disappeared in April 2011 Colin Coats and Philip Wade were found guilty of abducting, torturing and murdering the 27-year-old.
Murder cases where there is no body are still extremely rare in Scottish courts, but prosecutors say technology has increased the likelihood of them being brought before a jury.
Kenny Donnelly, a procurator fiscal at the High Court, said: "In today's society, it is very difficult to go completely unnoticed and undetected. There are digital footprints and this information can be gathered quickly and with greater reach than ever before.
"This growing expertise, together with developments in case law, forensic examination and investigative tools has led to the Crown challenging the boundaries of the circumstantial case and considering proceedings in matters which may once have been considered lacking in sufficient evidence."
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Margaret Fleming: How do you solve a murder without a body
The body of Margaret, who was 19 when she was last seen in Inverkip, has never been found.
Det Supt Livingstone said: "Everybody we spoke to had not seen her since 1999."
The investigation that followed unearthed a story of neglect, exploitation, fraud and murder.
It also posed the ultimate test for detectives and prosecutors: how do you secure a conviction without a body?
The scale of the task facing police was highlighted when Cairney and Jones could not help them obtain a forensic profile of Margaret.
The random items they handed over - a tartan jumper, blue T-shirt, socks and a toy penguin - contained no trace of the former college student.
If it wasn't for a routine blood sample taken shortly after she was born on 1 November, 1980, then officers would have been unable to get any of her DNA. These samples are not always retained by the NHS but, fortunately, Margaret's was.
The DNA profile was compared against a number of unidentified bodies and body parts across the UK but there was no match.
The search operation, including a full excavation of the garden, took six months but also found no trace of Margaret.
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"To do what they have ultimately done and to just cover it up and get away with it for so long is beyond wickedness."
As Cairney and Jones each face at least 14 years in prison, the senior detective has a simple message for the carers turned killers.
He said: "Your lies and deceit have caught up with you so, for once, just think about Margaret. That wee girl deserves a proper funeral."
The detective who helped bring Edward Cairney and Avril Jones to justice describes how his team cracked the case.
www.bbc.co.uk