Killer gave himself up to cancelled show

  A ‘Crimewatch’ killer gave himself up after seeing his own mugshot on one of the last episodes the programme, the Old Bailey heard. Frankey Dixon, 31, was allegedly part of a group of vigilantes who battered to death a vulnerable man they suspected of mugging his 81-year-old grandmother for her gold chain. His cousins Leon Dixon, 37, and half brother Mason Dixon, 22, were convicted earlier this year of killing Reginald ‘Reggie’ Ofei-Berko in Walworth, southeast London on 25…