the hope here remains, as ever, that they don t further turn on each other. james waterhouse, bbc news, in kyiv. news from lincoln crown court. a violent ex partner who fatally stabbed a mother and her young autistic son in front of a distressed baby before leading police on a 24 hour manhunt has been convicted of their murders.daniel boulton travelled 28 miles on foot from skegness to louth, lincolnshire, in order to kill his former girlfriend bethany vincent and her nine year old son darren henson at around 8pm on may 31 last year. boulton tried to claim he was on autopilot at the time of the murders, butjurors dismissed his defence of loss of control. the 30 year old killer admitted manslaughter on the second day of his trial,