A jury has been told it would be committing a "tragic miscarriage of justice" if it convicted a man accused of murdering radio host Nasim Jamil.
In his closing speech at the High Court in Glasgow, defence QC Donald Findlay, said there was only circumstantial evidence against Khalid Sarwar.
The 29-year-old is accused of murdering Mrs Jamil, 54, by repeatedly striking her on the head and body.
He denies killing the Awaz FM presenter at her flat in Glasgow last December.
Mr Findlay told the jury: "This was an horrific crime, it was horrific violence. The amount of violence, the seriousness of the violence.
"You do not want to contemplate what the last moments on earth were like for Mrs Jamil. Horror beyond the imaginings of decent human beings.
"People do awful things to one another. However, there has to be a deep reason why anyone would inflict this level of violence.
"Where do you find anything in the evidence to suggest that such a person was Khalid Sarwar.
"Why would Khalid Sarwar do that to a woman he was obviously very fond of. There is no reason to show why he would want to."
Mr Findlay told the jury that the Crown case was built on crumbling foundations and that there was not a scrap of evidence to prove that Sarwar murdered Mrs Jamil and then stole money and jewellery from her.
Mr Findlay said: "To convict Khalid Sarwar would be no more or no less than a tragic miscarriage of justice.
"This is a case about circumstantial evidence. There were no eye witnesses and no confession.
He told the jury: "The question you are being asked is not who killed Mrs Sarwar.
"The question you are being asked is have the Crown proved beyond reasonable doubt that Khalid Sarwar killed, murdered Mrs Jamil.
"If the answer to that question is no or we don't know, then that is an end of the matter."
Mr Findlay told the jury they must not allow themselves to be swayed by sympathy for Mrs Jamil's family or any other consideration, but consider the evidence objectively.
Mr Sarwar is accused of repeatedly striking Mrs Jamil on the head and body with a hammer, screwdriver, knife or similar instruments, repeatedly striking her on the head with a bottle and piece of glass and murdering her.
He is also accused of stealing a light bulb, two telephones, keys, gloves, a watch, a bracelet, a necklace, a pair of earrings, clothing, three knives, a bank card, an umbrella, a handbag and its contents and money.
He faces a third charge of attempting to pervert the course of justice.
Mr Sarwar denies all the charges and has lodged a special defence of incrimination.
The trial before Lord Brodie continues.