Best-selling crime writer Denise Mina believes she has solved a 65 year old mystery surrounding one of Scotland's most notorious murders.
The author says she's convinced serial killer Peter Manuel was hired through a third party by Glasgow businessman William Watt to kill his wife in September 1956.
Marion Watt, 45, died along with her 16-year-old daughter Vivienne and Marion's sister Margaret Brown, 41, when Manuel broke into their home in High Burnside, the Daily Record reports.
