Scotland's most mysterious murder - is it about to be solved?

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Alistair Wilson, a bank manager with two young sons, was 30 when he was shot dead on his doorstep in the seaside town of Nairn in 2004. We still don't know who killed him and why. His death is one of Scotland's longest running and most puzzling murder cases. The BBC's Scotland correspondent, James Shaw, reported on the murder at the time. He was helped by writer and former detective, Peter Bleksley. They spoke to witnesses - and to the police carrying out the investigation. James says that even then there was a sense that officers were struggling for answers. Now a new Scotland-wide force has been established. And there's been a string of press releases from a new team investigating the murder, strongly suggesting that progress is being made. For 5 Minutes On, James and Peter revisit the case - and find themselves outside the front door of a person believed to be of interest to the investigation. Photo credit: Getty Images, Dennis Barnes